2011 JEEP GRAND CHEROKEE OVERLAND SUMMIT. CONSUMER WRITES IN REGARDS TO SUDDEN VEHICLE ACCELERATION. *LD THE CONSUMER STATED THE VEHICLE SUDDENLY ACCELERATED INTO THE REAR OF A TRUCK, FLIPPED MULTIPLE TIMES, AND ROLLED APPROXIMATELY 30 FEET DOWN AN EMBANKMENT. THE AIRBAGS DID NOT DEPLOY. THE SEAT BELT FAILED TO LOCK CAUSING THE CONSUMER TO SUFFER A BROKEN EYE SOCKET. THE PASSENGER WAS KILLED. THE VEHICLE WAS TOTALED. *JS