Tl* the contact owns a 2003 infiniti q45. while driving various speeds, the engine stalled without warning and all power was lost. after several attempts, the vehicle was able to restart. the failure recurred randomly. the vehicle was taken to a dealer where the failure could not be determined. the vehicle was not repaired. the manufacturer was notified of the failure. the failure mileage was approximately 61,000. updated 11/29/16*lj the consumer has since traded the vehicle. updated 12/06/16.*jb