I APPROACHED A PARKING SPACE AT APPROXIMATELY 5 MPH, WITH MY FOOT ON THE BRAKE PEDAL, HOWEVER, SUDDENLY IT ACCELERATED IN SPITE OF MY FOOT PRESSING VERY HARD ON THE BRAKE PEDAL. I TRIED TO MANEUVER THE CAR WITH MY FOOT STILL ON THE BRAKE TO AVOID HITTING OTHER PARKED CARS AND FINALLY HIT BUSHES AND A SMALL TREE WHICH UPLIFTED THE FRONT WHEELS OFF THE GROUND AND STOPPED THE CAR. AT THAT POINT, THE IGNITION WAS TURNED OFF. THERE WERE HEAVY TRACK MARKS ON THE HARD SURFACE AS WELL AS ON THE GRASS LAWN, SUGGESTING THAT THE REAR WHEELS WERE LOCKED UP. I ESTIMATED $6,000 DAMAGE TO MY CAR AND PARKING AREA PROPERTY.