BMW presents the 'Vision Next 100' concept car during centenary celebrations at the Olympic Hall in Munich, southern Germany March 7, 2016. REUTERS/Michael Dalder

A tail of Pininfarina Green GT prototype is pictured at the 86th International Motor Show in Geneva, Switzerland, March 1, 2016. REUTERS/Denis Balibouse TPX IMAGES OF THE DAY

A female employee fills the tank of a car with a decal depicting Egyptian singer Mohamed Monier at a petrol station in Cairo, Egypt, February 24, 2016. A petrol station in the Egyptian capital Cairo hires women to work as attendants - until now, petrol stations were staffed almost exclusively by men. Picture taken February 24, 2016. REUTERS/Mohamed Abd El Ghany TPX IMAGES OF THE DAY

A view shows a tail light at a Bentley cars showroom of a dealership at 'Barvikha luxury village' shopping mall outside Moscow, Russia, February 1, 2016. As Russia wrestles with an economic crisis, more and more Porsches and Rolls-Royces are appearing on its roads. It seems something of a paradox; while mass-market car sales in the country have tumbled along with the rouble and oil prices, one area is bucking the trend - luxury cars. Picture taken February 1, 2016. REUTERS/Maxim Zmeyev

Ice is seen at the back of a car under sub-zero temperatures at Tai Mo Shan, the highest mountain in Hong Kong, China January 24, 2016. Government radio reported on Sunday that Hong Kong Observatory said it was the coldest day in 59 years, with the temperature dropping to 3.3 degrees in urban areas. REUTERS/Bobby Yip

Cars are blocked due to the snow at Saint-Arnoult-en-Yvelines toll near Paris December 8, 2010 as winter weather and sub-freezing temperatures continue in France. REUTERS/Mal Langsdon (FRANCE - Tags: ENVIRONMENT TRANSPORT)

Visitors check out a model of Porsche's new Panamera S car at the Shanghai International Auto show April 20, 2009. REUTERS/Aly Song (CHINA TRANSPORT BUSINESS)

A French new vehicle licence plate is seen on a motorbike at a Renault car dealer in Pierrelaye near Paris April 15, 2009. REUTERS/Charles Platiau (FRANCE POLITICS TRANSPORT)

An Aston Martin is driven to the quality control section of the motor manufacturer's production facility in Gaydon, central England, September 3, 2008. REUTERS/Darren Staples (BRITAIN)

The emblem is seen on a DBS at the Aston Martin production facility in Gaydon, central England in this picture taken September 3, 2008. British luxury car maker Aston Martin is suffering from the economic downturn but is hoping to offset weakness in the UK and United States with bigger sales in emerging markets -- with the Middle East a key target. Picture taken September 3. REUTERS/Darren Staples (BRITAIN)

A general view of Formula One cars in the rain during the British F1 Grand Prix at Silverstone July 6, 2008. REUTERS/Eddie Keogh (BRITAIN)

Buses carrying the jury from the Coroner's inquest into the deaths of Diana, Princess of Wales, and Dodi Al Fayed travel through the Pont de l'Alma tunnel in Paris October 8, 2007, where the Mercedes the couple were travelling in crashed. REUTERS/Cathal McNaughton/Pool (FRANCE)

Cars try to make their way through flooded streets after a heavy rainstorm in Zurich, June 21, 2007. REUTERS/Siggi Bucher (SWITZERLAND)

Vehicles emit lights during a traffic jam at the Yanan elevated road in China's financial capital Shanghai September 21, 2005. Car executives warned that competition in the world's third-largest auto market had intensified as car makers from all over the globe push products in one of the few remaining bright spots for sales. Analysts reckon that China's car market will expand 10 to 15 percent this year, matching growth in 2004 but well off the near-doubling of 2003. Picture taken September 21, 2005. REUTERS/Ming Ming CC/YH

Backlights of the newly designed Volkswagen Passat are pictured during an unveiling ceremony in the northern German city of Hamburg, February 15, 2005. Europe's largest car maker Volkswagen AG will launch its new Passat for the same price as its predecessor despite numerous technical advances. CPROD REUTERS/Christian Charisius CHA/ABP

Rear lights from vehicles are shown in a time exposure shot as
motorists depart Atlantic Beach, North Carolina, which is located on a
barrier island, September 16, 2003. The traffic was crossing the
Atlantic Beach-Morehead City Bridge as the deadline for a mandatory
evacuation for the island nears in the forecast path of Hurricane
Isabel. Pictures of the month September 2003 PP03090092 REUTERS/Joe
Skipper REUTERS

JLS/HB

Taillights from vehicles are shown in a time exposure as motorists depart Atlantic Beach, North Carolina, which is located on a barrier island, September 16, 2003. The traffic was crossing the Atlantic Beach-Morehead City Bridge as the deadline for a mandatory evacuation for the island nears in the forecast path of Hurricane Isabel. Pictures of the Year 2003 NO RIGHTS CLEARANCES OR PERMISSIONS ARE REQUIRED FOR THIS IMAGE TPORT REUTERS/Joe Skipper PP03090092 JLS/HB

Carlos "Carki" Del Aguila of the Washington area Guardian Angels holds
out a sign at a gas station near Route 95 in Alexandria, Virginia
October 13, 2002. The Guardian Angels are pumping gas for motorists in
the wake of the Washington area sniper attacks, which has left eight
people dead and two injured. REUTERS/Brendan McDermid

BM/SV