CAR WAS SHUT OFF, LOCKED AND PARKED IN MOTEL PARKING LOT. 45 MINUTES LATER, CALL WAS MADE TO ROOM THAT IT HAD ROLLED ACROSS LOT, DOWN A HILL AND CRASHED INTO A TANKER TRUCK WHICH WAS REFUELING @ A GAS STATION. CAR WAS RUNNING AND IN DRIVE. I AM DOUBLY SURE CAR HAD BEEN SHUT OFF, PLACED IN PARK, AND LOCKED SECURELY. WEATHER HAD BEEN EXTREMELY HOT THAT DAY (+100 DEGREES). *TR