The U.S. Department of Transportation released results from an unprecedented ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles. The National Highway Traffic Safety Administration (NHTSA) launched the study last spring at the request of Congress, and enlisted NASA engineers to conduct new research into whether electronic systems or electromagnetic interference played a role in incidents of unintended acceleration. NASA engineers found no electronic flaws in Toyota vehicles capable of producing the large throttle openings required to create dangerous high-speed unintended acceleration incidents. This book provides an analysis of the research by NASA engineers and the U.S. Department of Transportation into Toyota automobiles and the unintended acceleration episodes that have been reported.