I PULLED INTO A PARKING LOT, PUT THE VEHICLE INTO PARK AND LEFT THE ENGINE RUNNING. I GOT OUT OF THE VEHICLE, WHEN IT STARTED TO ROLL BACKWARDS. I ATTEMPTED TO CLIMB INTO THE VEHICLE TO STOP IT, WHEN I FELL TO THE GROUND AND THE LEFT FRONT TIRE OF THE VEHICLE RAN OVER MY PELVIC AREA. I AM POSITIVE THAT THE CAR WAS IN PARK AT THE TIME IT STARTED TO ROLL AWAY.