CAR IS AN AUTOMATIC; PARKED IN AN "OUTPOUCHING" OF DRIVEWAY; IN PARK WITH PARKING BRAKE ON; CAR WAS NOT ON!!! I WAS IN PASSENGER SIDE REACHING UNDER SEAT; CAR DRIFTED ACROSS DRIVEWAY,CRASHED INTO WOODEN SHED, WAS STILL IN PARK WITH PARKING BRAKE ON AND NOT TURNED ON; MY RIGHT LEG WAS DRAGGED, FOR IT WAS OUT OF PASSENGER DOOR, RIGHT PASSENGER DOOR WAS DRAGGED AGAINST ROCK WALL AS WAS MY LEG; CAR IS TO HAVE SAFETY FEATURE THAT IT MUST BE TURNED ON, STEPON BRAKE PEDAL & DISENGAGE BUTTON ON GEAR SHIFT TO MOVE CAR...CAR WAS NOT ON AND I WAS IN PASSENGER SIDE