DRIVER WAS HEADING SOUTH ON I684, ON THE EXIT RAMP TO 287 WEST, IN HEAVY TRAFFIC. VEHICLE SUDDENLY APPEARED TO SHUT OFF, MAKING IT IMPOSSIBLE TO STEER AND BRAKE. DRIVER RAN OFF THE ROAD AND WENT NOSE FIRST INTO A DITCH, DAMAGING THE FRAME, RADIATOR, AIRCO AND NOSE OF VEHICLE. THE VEHICLE WAS TOTALED AS A RESULT. *TR