Members of the media record and watch as a 2008 Toyota Prius is demonstrated breaking at 85 MPH in a stadium parking lot following Toyota's announcement of preliminary findings regarding their investigation of the unintended acceleration incident involving a 2008 Toyota Prius at a news conference in San Diego, California March 15, 2010. Toyota Motor Corp said on Monday it had found no evidence to support the driver's account of a widely publicized "runaway" Prius incident in California. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT MEDIA BUSINESS IMAGES OF THE DAY)

Members of the media gather around a 2008 Toyota Prius in a stadium parking lot following Toyota's announcement of preliminary findings regarding their investigation of an unintended acceleration incident on March 8 involving a 2008 Toyota Prius at a news conference in San Diego, California March 15, 2010. Toyota Motor Corp said on Monday it had found no evidence to support the driver's version of a widely publicized "runaway" Prius episode a week ago, suggesting that authorities examine whether the incident happened as reported to police. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT)

Members of the media record and watch as a 2008 Toyota Prius is demonstrated breaking at 85 MPH in a stadium parking lot following Toyota's announcement of preliminary findings regarding their investigation of the unintended acceleration incident involving a 2008 Toyota Prius at a news conference in San Diego, California March 15, 2010. Toyota Motor Corp said on Monday it had found no evidence to support the driver's account of a widely publicized "runaway" Prius incident in California. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT BUSINESS MEDIA)

Toyota personnel prepare a 2008 Prius vehicle before allowing members of the media to test the car's braking system during a news conference in San Diego March 15, 2010 to announce preliminary findings regarding their investigation of an unintended acceleration incident on March 8 involving a 2008 Toyota Prius. Toyota Motor Corp said on Monday it had found no evidence to support the driver's version of a widely publicized "runaway" Prius episode a week ago, suggesting that authorities examine whether the incident happened as reported to police. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT)

Members of the media gather around a 2008 Toyota Prius in a stadium parking lot following Toyota's announcement of preliminary findings regarding their investigation of an unintended acceleration incident on March 8 involving a 2008 Toyota Prius, at a news conference in San Diego, California March 15, 2010. Toyota Motor Corp said on Monday it had found no evidence to support the driver's version of a widely publicized "runaway" Prius episode a week ago, suggesting that authorities examine whether the incident happened as reported to police. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT)

Bob Waltz, Vice President of Product, Quality and Service Support at Toyota Motor Sales, USA, Inc. describes preliminary findings regarding their investigation of an unintended acceleration incident on March 8 involving a 2008 Toyota Prius, at a news conference in San Diego, California March 15, 2010. Toyota Motor Corp said on Monday it had found no evidence to support the driver's version of a widely publicized "runaway" Prius episode a week ago, suggesting that authorities examine whether the incident happened as reported to police. Listening in the background is Mike Michels, Vice President of Communications for Toyota Motor Sales, USA, Inc. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT)

Mike Michels, Vice President of Communications for Toyota Motor Sales, USA, Inc. speaks during a news conference to announce preliminary findings regarding their investigation of an unintended acceleration incident on March 8 involving a 2008 Toyota Prius, in San Diego, California March 15, 2010. Toyota Motor Corp said on Monday it had found no evidence to support the driver's version of a widely publicized "runaway" Prius episode a week ago, suggesting that authorities examine whether the incident happened as reported to police. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT)

Members of the media gather around a 2008 Toyota Prius in a stadium parking lot following Toyota's announcement of preliminary findings regarding their investigation of an unintended acceleration incident on March 8 involving a 2008 Toyota Prius, at a news conference in San Diego, California March 15, 2010. Toyota Motor Corp said on Monday it had found no evidence to support the driver's version of a widely publicized "runaway" Prius episode a week ago, suggesting that authorities examine whether the incident happened as reported to police. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT)

A member of the media drives a 2008 Toyota Prius and applies the brakes in a stadium parking lot following Toyota's announcement of preliminary findings regarding their investigation of an unintended acceleration incident on March 8 involving a 2008 Toyota Prius, during a news conference in San Diego, California March 15, 2010. Toyota Motor Corp said on Monday it had found no evidence to support the driver's version of a widely publicized "runaway" Prius episode a week ago, suggesting that authorities examine whether the incident happened as reported to police. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT)

The brake and gas pedals of a 2008 Toyota Prius are shown in San Diego March 15, 2010 during a Toyota news conference of preliminary findings regarding their investigation of an unintended acceleration incident on March 8 involving a 2008 Toyota Prius. Toyota Motor Corp said on Monday it had found no evidence to support the driver's version of a widely publicized "runaway" Prius episode a week ago, suggesting that authorities examine whether the incident happened as reported to police. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT)

Bob Waltz, Vice President of Product, Quality and Service Support at Toyota Motor Sales, USA, Inc. describes preliminary findings regarding their investigation of an unintended acceleration incident involving a 2008 Toyota Prius, at a news conference in San Diego, California March 15, 2010. Listening in the background is Mike Michels, Vice President of Communications for Toyota Motor Sales, USA, Inc. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT)

Members of the media gather in front of a Toyota dealership in El Cajon, California March 9, 2010. U.S. safety regulators and Toyota Motor Corp dispatched investigators to San Diego on Tuesday to inspect a 2008 Prius that sped out of control on a California freeway a day earlier. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT BUSINESS)

A driver brings his Toyota Prius into the service bay at a dealership in El Cajon, California March 9, 2010. U.S. safety regulators and Toyota Motor Corp dispatched investigators to San Diego on Tuesday to inspect a 2008 Prius that sped out of control on a California freeway a day earlier. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT BUSINESS)

Employees look over their inventory of vehicles at a Toyota dealership in El Cajon, California March 9, 2010. U.S. safety regulators and Toyota Motor Corp dispatched investigators to San Diego on Tuesday to inspect a 2008 Prius that sped out of control on a California freeway a day earlier. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT BUSINESS)

A row of new 2010 Toyota Prius hybrid vehicles sit for sale in the car lot at the Toyota dealership in El Cajon, California March 9, 2010. U.S. safety regulators and Toyota Motor Corp dispatched investigators to San Diego on Tuesday to inspect a 2008 Prius that sped out of control on a California freeway a day earlier. REUTERS/Mike Blake (UNITED STATES - Tags: TRANSPORT BUSINESS)

An engineer of Nagoya Toyopet, a Toyota Motor Corp dealership, installs a new antilock braking system (ABS) software on a recalled Prius hybrid in Nagoya, central Japan February 10, 2010. As the U.S. Congress gears up to delve into Toyota Motor Corp's massive global vehicle recall, the question they face is whether the automaker and regulators misread or ignored rising consumer complaints. REUTERS/Yuriko Nakao (JAPAN - Tags: TRANSPORT EMPLOYMENT BUSINESS)

A crash test dummy is displayed inside a Toyota vehicle to demonstrate Toyota's Whiplash Injury Lessening Concept Seat at its showroom in Tokyo February 3, 2010. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: TRANSPORT)

A Toyota gas pedal assembly and other parts required to correct the occurrence of sticking accelerator pedals on some 270,000 recalled vehicles are shown during a news conference in Toronto, February 22, 2010. Toyota's engineers have modified their pedal assembly by inserting a precision-cut steel reinforcement bar to eliminate excess friction. REUTERS/ Mike Cassese (CANADA - Tags: TRANSPORT)

A mechanic repairs an accelerator pedal from a recalled vehicle at a Toyota service centre in Warsaw, February 10, 2010. Toyota announced that it's recalling 73,500 cars in Poland for accelerator pedal servicing. In Europe, the number has reached 1, 686,000. REUTERS/Kacper Pempel (POLAND - Tags: TRANSPORT BUSINESS)

A Toyota Prius' badge is pictured on a car at a Toyota dealership in west London February 9, 2010. Toyota Motor Corp said it is recalling nearly half a million of its flagship Prius and other hybrid cars for braking problems as it seeks to address criticism over the handling of its worst safety crisis. REUTERS/Toby Melville (BRITAIN - Tags: TRANSPORT BUSINESS)

Toyota service technician Tony Saelee holds up a reinforcement bar in Daly City, California February 4, 2010. Toyota was sending reinforcement bars, which are inserted into the pedal mechanism, to Toyota service departments in an effort to fix the issue. Toyota's recall of more than 8 million vehicles due to problems with unintended acceleration has punished its share price, dented its reputation and overshadowed what until just two weeks ago had been expected to be an upbeat story of improving earnings. REUTERS/Robert Galbraith (UNITED STATES - Tags: TRANSPORT BUSINESS IMAGES OF THE DAY)

Toyota Motor Corporation President Akio Toyoda is sworn in before testifying on Toyota's car safety before the U.S. House Committee on Oversight and Government Reform on Capitol Hill in Washington, February 24, 2010. Toyoda pledged to cooperate fully with U.S government officials investigating safety problems on Wednesday as he prepared to tell a congressional panel that the automaker had let standards slip in its rise to the top. REUTERS/Jason Reed (UNITED STATES - Tags: TRANSPORT POLITICS BUSINESS IMAGES OF THE DAY)

Toyota logos are pictured at a dealership in Crissier near Lausanne February 7, 2010. Toyota, which has recalled more than 8 million vehicles around the world for problems with unintended acceleration, has decided to recall its new Prius hybrid in Japan to fix a braking software glitch, a dealer said Sunday. REUTERS/Valentin Flauraud (SWITZERLAND - Tags: TRANSPORT BUSINESS)

A Toyota technician holds an accelerator pedal from a recalled vehicle at a service centre in south London February 10, 2010. Toyota today began repairing vehicles in Britain which have been recalled due to two different faults. REUTERS/Andrew Winning (BRITAIN - Tags: TRANSPORT BUSINESS)

A technician displays a replacement metal plate, that will be installed in recalled Toyota vehicles with faulty accelerator pedals, at a service centre in south London February 10, 2010. Toyota today began repairing vehicles in Britain which have been recalled due to two different faults. REUTERS/Andrew Winning (BRITAIN - Tags: TRANSPORT BUSINESS)