TRAVELED APPROXIMATELY 80 MILES ROUND TRIP. PULLED INTO DRIVEWAY OF PASSENGER AND STOPPED. CAR WAS IDLING THEN SUDDENLY SURGED FORWARD. HAD TO STOMP ON BRAKE HARD, BUT STILL HIT GARAGE DOOR CAUSING DAMAGE. THIS WAS THE THIRD INCIDENT WITH MY CAR AND I AM NOW AFRAID TO DRIVE IT. SECOND INCIDENT OCCURRED WHEN I SLOWED AT A STOP LIGHT WHICH WAS GREEN PREPARING TO TURN RIGHT. THE CAR SUDDENLY ACCELERATED AND I STOOD ON THE BRAKE AS I TURNED THE CORNER. THE CAR SOUNDED LIKE ALL THE BOLTS AND MOTOR WERE FALLING OUT BEFORE IT RIGHTED ITSELF. THIS COULD HAVE BEEN A VERY SERIOUS ACCIDENT.