CAR WAS STARTED AND PUT IN REVERSE TO BACK UP WHEN THE CAR LUNDGED AND ACCELATRATED OUT OF CONTROL IN REVERSE STRIKING ANOTHER VEHICLE. WHEN PUT INTO DRIVE TO PULL AWAY FROM VEHICLE, THE CAR DID THE SAME OUT OF CONTROL ACCELERATION FORWARD JUMPING A CURB AND STRIKING A GROCERY STORE FOUNDATION AND THE VEHICLE PROCEEDING PARTIALLY INTO THE STORE. WE HAVE WITNESSES THAT DISCRIBED THE CAR TOTALLY OUT OF CONTROL LEAVING THE INJURED DRIVER HELPLESS. SUSPECT FUEL SYSTEM AND AUTOMATIC TRANSMISSION FAILURE. THE INCIDENT OCCURED IN AN APPROX 20-30 DISTANCE. THE VEHICLE WAS A TOTAL. THE DEALER AND CHRYSLER WAS CONTACTED BY BOTH MYSELF AND STATE FARM INSURANCE AGENCY. NO RETURN CALL FROM CHRYLER AT PRESENT DATE FOR DIAGONOSITIC CHECK.