THE CAR OPERATED WELL AT FIRST START. EARLY IN THE DAY, IT DROVE 30+ MILES. AFTER BEING PARKED FOR 6+ HOURS IN A FLAT PUBLIC PARKING LOT, IT WAS TURNED ON AND PUT INTO REVERSE TO BACK OUT OF THE STALL. UPON LIGHTLY RELEASING THE BRAKE, THE CAR ACCELERATED AT A HIGH SPEED (APPROX 20MPH) AND HIT A PARKING PILLAR. A LARGE AMOUNT OF DAMAGE WAS DONE TO THE BACK END, INCLUDING BUMPER, HATCH, SAFETY REINFORCEMENT BAR AND FLOOR BOARD ALL HAD TO BE REPLACED.