CNN Your Money June 7, 2014 18:13:00
Speed limit was 55. do you believe that that could have caused the accident? >> no. i believe that she lost power. >> reporter: it's now known the ignition switch on her cobalt was defective. this analysis of the data report shows the switch was in the accessory position at the time of the crash shutting the engine off and disabling the air bags, power steering and anti-lock brakes. >> were e believe the evidence is overwhelming that the defectses in this key system resulted in brooke's loss of control and her death. >> reporter: gm would not comment on the data recorder information. the defec...