(AP) - Toyota Prius vehicles are seen for sale Wednesday, March 10, 2010, in Hayward, Calif. The government sent investigators Tuesday to examine a Prius that sped out of control on a California freeway, and Toyota said it wanted to interview the driver as the besieged automaker dealt with a high-profile new headache that raised questions about the safety of its beloved hybrid. A day after state troopers helped the car slow to a stop and its driver to emerge unharmed, Toyota could shed no new light on what might have gone wrong. (AP Photo/Ben Margot)

(AP) - A large hole is seen in a stone wall in Purchase, New York, Wednesday, March 10, 2010. The driver of a 2005 Toyota Prius told police in suburban New York that the car accelerated on its own, then lurched down a driveway, across a road and into the stone wall.(AP Photo/Seth Wenig)

(AP) - A 2005 Toyota Prius, which was in an accident, is seen at a police station in Harrison, New York, Wednesday, March 10, 2010. The driver of the Toyota Prius told police that the car accelerated on its own, then lurched down a driveway, across a road and into a stone wall. (AP Photo/Seth Wenig)

(AP) - A 2005 Toyota Prius, which was in an accident, is seen at a police station in Harrison, New York, Wednesday, March 10, 2010. The driver of the Toyota Prius told police that the car accelerated on its own, then lurched down a driveway, across a road and into a stone wall.(AP Photo/Seth Wenig)

(AP) - A 2005 Toyota Prius, which was in an accident, is seen at a police station in Harrison, New York, Wednesday, March 10, 2010. The driver of the car told police that the car accelerated on its own, then lurched down a driveway, across a road and into a stone wall. (AP Photo/Seth Wenig)

(AFP/Fiile) - Picture of a Toyota Prius at Toyota headquarters in Quito on February 2010. US investigators launched a probe Tuesday into a runaway Toyota Prius in California, a high-profile case that threatens to undermine the Japanese automaker's effort to repair its battered image.(AFP/Fiile/Rodrigo Buendia)

(AFP/File) - Newly assembled Toyota Prius hybrid vehicles are parked at the company's plant in the city of Toyota, Aichi Prefecture on March 3. US investigators launched a probe Tuesday into a runaway Toyota Prius in California, a high-profile case that threatens to undermine the Japanese automaker's effort to repair its battered image.(AFP/File/Kazuhiro Nogi)

(AFP/NBC NEWS) - This still image from a video courtesy of NBC News shows a Toyota Prius (R) stopped before a police vehicle (L) on a freeway, on March 8, outside San Diego in California, after 61-year-old driver James Sikes noticed his car began to accelerate of its own accord. US investigators launched a probe Tuesday into the runaway Prius.(AFP/NBC NEWS)

(Reuters) - A Toyota Prius is seen at the Chicago Auto Show in this February 9, 2010 file photo. REUTERS/John Gress

(Reuters) - A California Highway Patrol vehicle (L), and a Toyota Prius (R) owned by James Sikes are shown stopped on the side of a freeway in San Diego in this video frame grab obtained March 9, 2010. Toyota said its own inspectors are also working to try to find out what caused the 2008 Prius to surge uncontrollably to over 90 miles per hour as it was being driven by owner Sikes. The high-speed incident, which involved a dramatic pursuit by a highway patrol car, has raised new questions about the automaker's damaging string of recent recalls and whether Toyota has done enough to address consumer complaints about unintended acceleration that have damaged its reputation and sales. REUTERS/NBC/Handout (UNITED STATES - Tags: TRANSPORT BUSINESS IMAGES OF THE DAY) NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS