PULLING IN TO PARK VEHICLE, CAR SUDDENLY ACCELERATED AND CAR WOULDN'T STOP. CAR WENT OVER EMBANKMENT AND THROUGH A FENCE BEFORE COMING TO A STOP. INSURANCE COMPANY JUST TOTALED THE CAR. UNKNOWN WHETHER ACCELERATOR AND BRAKES WERE FAILING. CAR WAS IN GOOD MECHANICAL CONDITION PRIOR TO ACCIDENT AND WAS SERVICED IN LAST 90 DAYS. SUSPECT ACCELERATOR MALFUNCTION SENDING VEHICLE INTO OUT-OF-CONTROL SITUATION. CAR HAD NO KNOWN RECALL ISSUES.