Opel Germany CEO Thomas Sedran gives a statement to media during a staff meeting of European carmaker Opel in Bochum December 10, 2012. Opel, the ailing European brand belonging to General Motors, said it plans to end vehicle production in 2016 at its acutely endangered Bochum plant in Germany, the company said on Monday. REUTERS/Ina Fassbender (GERMANY - Tags: TRANSPORT BUSINESS EMPLOYMENT) 

Opel Germany CEO Thomas Sedran gives a statement to media during a staff meeting of European carmaker Opel in Bochum December 10, 2012. Opel, the ailing European brand belonging to General Motors, said it plans to end vehicle production in 2016 at its acutely endangered Bochum plant in Germany, the company said on Monday. REUTERS/Ina Fassbender (GERMANY - Tags: TRANSPORT BUSINESS EMPLOYMENT) 

Opel Germany CEO Thomas Sedran gives a statement to media during a staff meeting of European carmaker Opel in Bochum December 10, 2012. Opel, the ailing European brand belonging to General Motors, said it plans to end vehicle production in 2016 at its acutely endangered Bochum plant in Germany, the company said on Monday. REUTERS/Ina Fassbender (GERMANY - Tags: TRANSPORT BUSINESS EMPLOYMENT) 

An Opel pin is pictured on the jacket of Opel Germany CEO Thomas Sedran during a statement to media during a staff meeting of European carmaker Opel in Bochum December 10, 2012. Opel, the ailing European brand belonging to General Motor, said it plans to end vehicle production in 2016 at its acutely endangered Bochum plant in Germany, the company said on Monday. REUTERS/Ina Fassbender (GERMANY - Tags: TRANSPORT BUSINESS EMPLOYMENT) 

Opel Germany CEO Thomas Sedran leaves after giving a statement to media during a staff meeting of European carmaker Opel in Bochum December 10, 2012. Opel, the ailing European brand belonging to General Motor, said it plans to end vehicle production in 2016 at its acutely endangered Bochum plant in Germany, the company said on Monday. REUTERS/Ina Fassbender (GERMANY - Tags: TRANSPORT BUSINESS EMPLOYMENT) 

Opel Germany CEO Thomas Sedran gives a statement to media during a staff meeting of European carmaker Opel in Bochum December 10, 2012. Opel, the ailing European brand belonging to General Motor, said it plans to end vehicle production in 2016 at its acutely endangered Bochum plant in Germany, the company said on Monday. REUTERS/Ina Fassbender (GERMANY - Tags: TRANSPORT BUSINESS EMPLOYMENT) 

The logo of the carmaker Opel is seen on the rusty bonnet of a vintage Opel Caravan estate vehicle in Berlin, August 23, 2012. General Motors' ailing German unit Opel will cut the hours of several thousand workers at two of its four plants in response to a drop in demand for cars in Europe. Opel agreed with labour representatives to halt production for a total of 20 days at its main factory in Ruesselsheim and its component plant in Kaiserslautern between September and the end of the year, it said on Thursday, confirming an earlier report. REUTERS/Thomas Peter (GERMANY - Tags: TRANSPORT BUSINESS LOGO) 

The logo of the carmaker Opel is seen on the rusty bonnet of a vintage Opel Caravan estate vehicle in Berlin, August 23, 2012. General Motors' ailing German unit Opel will cut the hours of several thousand workers at two of its four plants in response to a drop in demand for cars in Europe. Opel agreed with labour representatives to halt production for a total of 20 days at its main factory in Ruesselsheim and its component plant in Kaiserslautern between September and the end of the year, it said on Thursday, confirming an earlier report. REUTERS/Thomas Peter (GERMANY - Tags: TRANSPORT BUSINESS LOGO) 

The logo of the carmaker Opel is seen on the rusty bonnet of a vintage Opel Caravan estate vehicle in Berlin, August 23, 2012. General Motors' ailing German unit Opel will cut the hours of several thousand workers at two of its four plants in response to a drop in demand for cars in Europe. Opel agreed with labour representatives to halt production for a total of 20 days at its main factory in Ruesselsheim and its component plant in Kaiserslautern between September and the end of the year, it said on Thursday, confirming an earlier report. REUTERS/Thomas Peter (GERMANY - Tags: TRANSPORT BUSINESS LOGO) 

The logo of the carmaker Opel is seen on the rusty bonnet of a vintage Opel Caravan estate vehicle in Berlin, August 23, 2012. General Motors' ailing German unit Opel will cut the hours of several thousand workers at two of its four plants in response to a drop in demand for cars in Europe. Opel agreed with labour representatives to halt production for a total of 20 days at its main factory in Ruesselsheim and its component plant in Kaiserslautern between September and the end of the year, it said on Thursday, confirming an earlier report. REUTERS/Thomas Peter (GERMANY - Tags: TRANSPORT BUSINESS LOGO) 

The logo of German car manufacturer Opel is seen covered with snowon a vehicle in Istanbul February 15, 2012. REUTERS/Osman Orsal (TURKEY - Tags: BUSINESS LOGO)

A traffic light is pictured in front of the Opel plant in Bochum February16 , 2012. U.S car making giant General Motors, the parent company of German car maker Opel, will announce their Q4 results later today. REUTERS/Ina Fassbender (GERMANY - Tags: TRANSPORT BUSINESS EMPLOYMENT) 

The logo of German car manufacturer Opel is seen on the radiator grill of a vehicle covered with snow and ice in Bucharest February 10, 2012. REUTERS/Radu Sigheti (ROMANIA - Tags: BUSINESS LOGO)

German carmaker Adam Opel presents the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)

German carmaker Adam Opel presents the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)

German carmaker Adam Opel presents the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)

German carmaker Adam Opel presents the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)

German carmaker Adam Opel presents the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)

Karl-Friedrich Stracke, CEO of Adam Opel AG poses next to the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)

Karl-Friedrich Stracke, CEO of Adam Opel AG poses inside the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)

Karl-Friedrich Stracke, CEO of Adam Opel AG poses inside the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)

Karl-Friedrich Stracke, CEO of Adam Opel AG poses next to the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)

A factory building of German car manufacturer Opel is pictured at the headquarters in Ruesselsheim, 20km from Frankfurt, June 10, 2011. General Motors Co Chief Executive Daniel Akerson is reviewing options for what to do with Opel, a money-losing European unit the executive was in favour of selling in the past, people familiar with the matter said. The sources, who asked not to be identified, told Reuters on June 9, 2011 that selling Opel was not realistic, playing down reports by two German magazines that the sale option was being explored again. However, the sources added Akerson is clearly frustrated with Opel's inability to return to profitability. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS EMPLOYMENT) 

The logo of the Opel carmaker is seen at a showroom in central Berlin, June 3, 2010. Germany's new car market shrank for a sixth consecutive month as demand slumps following the end of government incentives. REUTERS/Thomas Peter (GERMANY - Tags: TRANSPORT BUSINESS) 

A combination photo shows the logos of car makers Porsche, Mercedes, Citroen, BMW, Volvo, Tata, Honda, Toyota, Corvette, Peugeot, Volkswagen, Lamboghini, Skoda, Seat, Saab, Opel, Lancia, Fiat, Ford, Alfa Romeo, Chevrolet, Aston Martin, Audi and Ferrari (L-R, top to bottom) during the second media day of the 80th Geneva Car Show at the Palexpo in Geneva March 2, 2010. REUTERS/Staff (SWITZERLAND - Tags: TRANSPORT BUSINESS IMAGES OF THE DAY) 

The company's name is seen at the radiator grill of a Swedish Saab car during the first media day of the 80th Geneva Car Show at the Palexpo in Geneva March 2, 2010. REUTERS/Valentin Flauraud (SWITZERLAND) 

A worker walks behind a logo of General Motors after the announcement of the closing of the Opel assembly plant in Antwerp January 21, 2010. U.S. carmaker General Motors decided to close its Opel plant in the Belgian port city of Antwerp, slamming the door on hopes to save the jobs of the site's 2,300 staff. REUTERS/Francois Lenoir (BELGIUM - Tags: EMPLOYMENT BUSINESS SOCIETY IMAGES OF THE DAY TRANSPORT) 

A view of the entrance of the Opel assembly plant in Antwerp, January 21, 2010. U.S. carmaker General Motors will close its Opel plant in the Belgian port city of Antwerp, sources said on Wednesday, slamming the door on hopes to save the jobs of the site's 2,300 staff. REUTERS/Francois Lenoir (BELGIUM - Tags: EMPLOYMENT BUSINESS TRANSPORT SOCIETY) 

A statue of Opel founder Adam Opel stands next to the headquarters of German car manufacturer Adam Opel Gmbh in Ruesselsheim November 5, 2009. The board of General Motors Co has opted to keep Opel, undoing months of painstaking negotiations to sell the European unit to a Russian-backed group led by Canada's Magna. GM confirmed the decision made by its 13-member board after a meeting of directors on Tuesday in Detroit. REUTERS/Ralph Orlowski (GERMANY BUSINESS TRANSPORT) 

A Opel logo is seen an the wall of the headquarters of German car manufacturer Opel in Ruesselsheim November 4, 2009. German and Russian leaders seethed and unions tore up a deal to cut costs in protest at General Motors' "completely unacceptable" decision to keep Opel, its European unit, after months of talks. Labour leader Klaus Franz rescinded hundreds of millions of euros in cost concessions that workers agreed to on condition that Opel was bought by Magna, the Russian-backed Canadian group long backed as buyer by Berlin and Moscow. REUTERS/Johannes Eisele (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

A traffic sign is seen in front of the headquarters of German car manufacturer Opel in Ruesselsheim November 4, 2009. German and Russian leaders seethed and unions tore up a deal to cut costs in protest at General Motors' "completely unacceptable" decision to keep Opel, its European unit, after months of sale talks. Labour leader Klaus Franz rescinded hundreds of millions of euros in cost concessions that workers agreed to on condition that Opel was bought by Magna, the Russian-bascked Canadian group long backed as buyer by Berlin and Moscow. REUTERS/Johannes Eisele (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

The headquarters of German car manufacturer Opel is reflected in a puddle in Ruesselsheim November 4, 2009. General Motors' decision to keep its European arm Opel after months of negotiations to sell it triggered anger and dismay in Germany, which had led the talks and was putting up much of the cash.
REUTERS/Johannes Eisele (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

A traffic sign is seen in front of the headquarters of German car manufacturer Opel in Ruesselsheim November 4, 2009. The board of General Motors has decided not to sell its Opel unit to Canadian auto parts maker Magna, GM confirmed the decision made by its 13-member board after a meeting of directors on Tuesday in Detroit. REUTERS/Johannes Eisele (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

A traffic sign is seen in front of the Opel plant in Bochum November 4, 2009. The board of General Motors has decided not to sell its Opel unit to Canadian auto parts maker Magna, GM confirmed the decision made by its 13-member board after a meeting of directors on Tuesday in Detroit. REUTERS/Ina Fassbender (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

The logo of Opel is seen at the plant in Bochum November 4, 2009. The board of General Motors has decided not to sell its Opel unit to Canadian auto parts maker Magna, GM confirmed the decision made by its 13-member board after a meeting of directors on Tuesday in Detroit. REUTERS/Ina Fassbender (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

An Opel worker has a sticker on his t-shirt reading "don't touch my job" while taking part in a demonstration outside the Opel assembly plant in Antwerp September 23, 2009. GM Europe is forming a group to discuss the future of Opel's plant in Antwerp, Belgium and will give details on its restructuring plan after talks are concluded, it said on Monday. REUTERS/Yves Herman (BELGIUM EMPLOYMENT BUSINESS TRANSPORT) 

Cars are parked outside the Opel assembly plant in Antwerp, September 11, 2009. GM's board opted to sell Magna and its Russian partner Sberbank a 55 percent stake in Opel over a rival offer from Belgium-listed investor RHJ International. Magna has said it could close a Belgian plant in Antwerp and a British factory in Luton if it failed to lure new contracts that would use their capacity. REUTERS/Francois Lenoir (BELGIUM TRANSPORT EMPLOYMENT BUSINESS) 

A man walks down a staircase next to a Vauxhall sign in London September 10, 2009. Vauxhall workers see at least 800 job losses across two British plants after Canadian car parts company Magna won the battle to control its parent company, Opel, a union leader said. REUTERS/Stefan Wermuth (BRITAIN EMPLOYMENT BUSINESS TRANSPORT) 

Vans are parked at the GM manufacturing plant in Luton, north of London, September 10, 2009. U.S. carmaker General Motors has decided to sell Opel to a group led by Canadian car parts maker Magna, ending months of uncertainty over the European unit's fate. REUTERS/Eddie Keogh (BRITAIN BUSINESS TRANSPORT) 

A lorry carrying vans leaves the GM manufacturing plant in Luton, north of London, September 10, 2009. U.S. carmaker General Motors has decided to sell Opel to a group led by Canadian car parts maker Magna, ending months of uncertainty over the European unit's fate. REUTERS/Eddie Keogh (BRITAIN BUSINESS TRANSPORT) 

A placard 'Opel Magna' is seen in front of the Opel plant in Bochum September 10, 2009. The board of General Motors has decided to recommend a sale of its European arm Opel to a group led by Canada's Magna, the carmaker said on Thursday, ending months of uncertainty over the unit's fate. REUTERS/Ina Fassbender (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

Workers walk past a poster, which reads: "Don't touch my job", as they leave the Opel assembly plant in Antwerp September 10, 2009. The board of General Motors has decided to sell its European arm Opel to Canadian auto parts group Magna but has attached strings to the sale, sources familiar with the situation told Reuters. REUTERS/Thierry Roge (BELGIUM EMPLOYMENT BUSINESS TRANSPORT) 

Workers leave the Opel assembly plant in Antwerp September 10, 2009. The board of General Motors has decided to sell its European arm Opel to Canadian auto parts group Magna but has attached strings to the sale, sources familiar with the situation told Reuters. REUTERS/Thierry Roge (BELGIUM EMPLOYMENT BUSINESS TRANSPORT) 

An Opel Insignia car is reflected on the logo of a car at the Opel plant of Antwerp September 10, 2009. The board of General Motors has decided to sell its European arm Opel to Canadian auto parts group Magna but has attached strings to the sale, sources familiar with the situation told Reuters. REUTERS/Sebastien Pirlet (BELGIUM TRANSPORT EMPLOYMENT BUSINESS) 

The silhouette of an employee is reflected by a logo at the Opel plant of Antwerp September 10, 2009. The board of General Motors has decided to sell its European arm Opel to Canadian auto parts group Magna but has attached strings to the sale, sources familiar with the situation told Reuters. REUTERS/Sebastien Pirlet (BELGIUM TRANSPORT EMPLOYMENT BUSINESS) 

An Opel sign is pictured in front of a GM logo at the Opel plant in Ruesselsheim September 10, 2009. General Motors was set to end months of suspense over the fate of its Opel unit on Thursday and announce whether it plans to sell the European carmaker to one of two rival bidders. GM said in a statement its board had taken a decision on Opel after a two-day meeting. REUTERS/Johannes Eisele (GERMANY POLITICS EMPLOYMENT BUSINESS TRANSPORT) 

The logo of Opel is pictured at the Opel plant in Bochum early September 10, 2009. General Motors shook up its management and dispatched a negotiator on the sale of its Opel unit to Berlin after a watershed two-day board meeting under the direction of Chairman Ed Whitacre. GM's 13-member board endorsed the departure of GM's chief financial officer, a new marketing campaign aimed at winning back sceptical U.S. consumers and a still-sealed decision on Opel that will be conveyed to German officials on Thursday, the sources said. REUTERS/Ina Fassbender (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

A flag of GM (General Motors) is seen next to an Opel logo at the Opel plant in Bochum September 9, 2009. Germany expects General Motors to pay back a 1.5 billion euro loan made to help Opel if GM keeps its European unit, Finance Minister Peer Steinbrueck was quoted as saying in a newspaper interview published on Wednesday. REUTERS/Ina Fassbender (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

A view of the General Motors headquarters at the Renaissance Center in Detroit, Michigan August 25, 2009. German government officials met with GM's top negotiator on Tuesday, hoping to get answers on why the U.S. carmaker has so far failed to choose a buyer for its European unit, Opel. REUTERS/Jeff Kowalsky (UNITED STATES TRANSPORT BUSINESS POLITICS) 

The General Motors logo is seen outside its headquarters at the Renaissance Center in Detroit, Michigan August 25, 2009. German government officials met with GM's top negotiator on Tuesday, hoping to get answers on why the U.S. carmaker has so far failed to choose a buyer for its European unit, Opel. REUTERS/Jeff Kowalsky (UNITED STATES TRANSPORT BUSINESS POLITICS) 

A view of the General Motors headquarters at the Renaissance Center in Detroit, Michigan August 25, 2009. German government officials met with GM's top negotiator on Tuesday, hoping to get answers on why the U.S. carmaker has so far failed to choose a buyer for its European unit, Opel. REUTERS/Jeff Kowalsky (UNITED STATES TRANSPORT BUSINESS POLITICS IMAGES OF THE DAY) 

The Opel logo is seen behind a fence at the plant in Bochum August 25, 2009. German Foreign Minister Frank-Walter Steinmeier said General Motors Co's top negotiator for a deal on the sale of its European unit Opel would meet the government's Opel Taskforce on Tuesday in Berlin. REUTERS/Ina Fassbender (GERMANY TRANSPORT BUSINESS EMPLOYMENT) 

A red light signal and Opel emblem is pictured in Berlin August 25, 2009. German Foreign Minister Frank-Walter Steinmeier said General Motors Co's top negotiator for a deal on the sale of its European unit Opel would meet the government's Opel Taskforce on Tuesday in Berlin. REUTERS/Pawel Kopczynski (GERMANY TRANSPORT BUSINESS) 

The silhouette of an employee is reflected by the Opel logo at a plant in Antwerp August 21, 2009. U.S. carmaker General Motors' board of directors is set to decide on Friday which suitor for the Opel business in Europe it will support. REUTERS/Sebastien Pirlet (BELGIUM BUSINESS TRANSPORT) 

Flags wave behind a road sign indicating a cul-de-sac at the Opel plant of Antwerp August 21, 2009. U.S. carmaker General Motors' board of directors is set to decide on Friday which suitor for the Opel business in Europe it will support. REUTERS/Sebastien Pirlet (BELGIUM TRANSPORT EMPLOYMENT BUSINESS) 

An Opel logo is seen at the Opel plant of Antwerp August 21, 2009. U.S. carmaker General Motors' board of directors is set to decide on Friday which suitor for the Opel business in Europe it will support. REUTERS/Sebastien Pirlet (BELGIUM TRANSPORT EMPLOYMENT BUSINESS) 

The emblem of an Opel vehicle is pictured in front of an Opel car dealer in Himmelkorn, near Leipzig August 9, 2009. Picture taken August 9, 2009. REUTERS/Pawel Kopczynski (GERMANY) 

The logo of German carmaker Opel is pictured on a van in Berlin, August 4, 2009. General Motors is taking more time to negotiate with Magna and RHJ International over the planned sale of its European arm Opel, the U.S.-based company said on Tuesday. REUTERS/Tobias Schwarz (GERMANY TRANSPORT POLITICS BUSINESS)