WHILE BACKING OUT OF A PARKING SPACE WITH A FOOT ON THE BRAKES VEHICLE STARTED TO ACCELERATE IN REVERSE. WAS BROUGHT TO A HALT AFTER FRONT PASSENGER'SIDE STRUCK A TREE. CONSUMER'S FOUR YEAR OLD CHILD'S HEAD HIT REAR DOOR WINDOW, CRACKING THE WINDOW IN THE PROCESS. CONSUMER SUFFERED BACK INJURIES. SEAT BELTS WERE WORN BUT NONE OF THE AIR BAGS IN VEHICLE DEPLOYED.*AK