VEHICLE IN PARK AN IDLING IN VERY LEVEL DRIVEWAY WAS BEING UNLOADED. ON A SECOND EXIT TOWARD THE VEHICLE IT STARTED TO MOVE IN REVERSE UNOCCUPIED. MANAGED TO GET IN BUT COULD NOT SAVE THE DOOR AND REAR FROM DAMAGE. A HEDGE CAUGHT THE DOOR AS I TRIED TO STOP THE VEHICLE. UPDATED 05/26/16*LJ *CN