UPON STARTING AND PUTTING CAR IN REVERSE ENGINE EXPERIENCED UNCONTROLLABLE ACCELERATION. CAR IT BACKED ACROSS A THE TRAFFIC LANE IN A PARKING LOT WITH THE BRAKES APPLIED STUCK TWO PARKED CARS AND ENDED UP ON TOP OF A PLANTING AREA AFTER HITTING A TREE PLANTED THERE. POLICE WERE CALLED AND RESPONDED. THE CAR HAS BEEN LOOKED AT BY A MECHANIC BUT COULD NOT FIND A VISIBLE PROBLEM WITH THE ACCELERATOR. *TR