I WAS SLOWLY PULLING INTO A PARKING SPACE. MY FOOT WAS LIGHTLY ON THE BRAKE, INCHING FORWARD. I PRESSED DOWN ON THE BRAKE TO STOP, AND THE CAR SUDDENLY ACCELERATED, CAUSING THE JEEP TO JUMP OVER THE DOUBLE BARRIER RETAINING WALL. I NOSE DIVED INTO THE GROUND ON THE OTHER SIDE OF THE WALL, APPROXIMATELY 3 LOWER THEN PARKING LOT.