http://www.freep.com/article/20100316/BUSINESS0104/3160361/1318/Are-cosmic-rays-really-causing-Toyotas-woes (2.3 meg pdf) http://nhthqnwws111.odi.nhtsa.dot.gov/acms/docservlet/Artemis/Public/Pursuits/2010/RQ/INME-RQ10003-39160P.pdf