WHILE BACKING SLOWLY INTO A PARKING SPOT OF AN INNER CITY SUPERMARKET IN A BUSY RESIDENTIAL AREA THE CAR SUDDENLY ACCELERATED. IT WENT OVER A 1 FT CONCRETE CURB LIMITER INTO THE STREET AND AFTER A 180 DEGREE LOOP IN REVERSE I FINALLY HIT THE E-BRAKE HARD WHILE AT THE SAME TIME I RAN OVER A PEDESTRIAN TRAFFIC LIGHT AND HIT A TREE WITH THE REAR PASSENGER SIDE TO A FULL STOP. AIR BAGS DID NOT DEPLOY. DURING ALL THIS PERIOD OF PROBABLY LESS THAN 10 SECONDS THE FOOT BRAKE WAS NOT RESPONDING ANY MORE. AFTER IMPACT THE ENGINE DID NOT START ANYMORE AND THE CAR WAS TOWED FROM THE SCENE.