Kirsch, Medford and Strickland listen as U.S. Secretary of Transportation Ray LaHood speaks at a news conference in Washington

NASA engineer Michael Kirsch (2nd L), NHTSA Deputy Administrator Ronald Medford (2nd R) and NHTSA Administrator David Strickland (R) listen as U.S. Secretary of Transportation Ray LaHood speaks at a news conference to discuss the results of the Toyota unintended acceleration study in Washington February 8, 2011. The government investigation showed no link between electronic throttles and unintended acceleration in Toyota Motor Corp vehicles, a victory for the world's top automaker battered by recalls over runaway vehicles. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS TRANSPORT SCI TECH BUSINESS)