The electric parking gear shift slipped out of park on it own. When I stepped out of the car and the gear was placed in P park position, I got out the car was completely in park and not moving, I went to open my garage and planned to come back and drive car in garage. The car automatically with no one driving slipped into another gear on its own, I looked up as I was opening garage the car was driving towards me and pinned me in between the garage and car. I was stuck and screaming for help I almost lost my life a neighbor ran over and put it in reverse and saved my life. I was car flighted to trauma unit with fractured hips and pelvic area. I was almost killed in this accident.