DRIVER HAD LOST CONTROL OF VEHICLE, POSSIBLY FELL ASLEEP AND RAN OFF THE ROAD , CAR WENT OVER ENBANKMENT AND HIT HEAD-ON AGAINST ROCKS. DRIVER WAS THROWN FROM VEHICLE THROUGH WINDSHIELD ABOUT 30-35 FEET DUE FAILURE OF AUTOMATIC SEATBELT. AUTOMATIC SEAT BELT WAS IN FORWARD POSTION ON THE AUTOMATIC RAIL, AND BOTH DOORS WERE COMPLETELY CLOSED. ALSO BATTERY WAS THROWN FROM THE VEHICLE . DEFECT RESULTED IN DEATH OF DRIVER.*AK