I HAD AN ACCIDENT IN 8/6 WHERE I PLACE.MY CAR IN PARKING (P) AND ALL OF SUDDEN A VERY ACCELARATE NOISE CAME FROM THE ENGINE AND LOCKED ME AND MY HUSBAND INSIDE, WE COULDNT OPEN THE DOOR AND NOT EVEN TO TURN OFF BECAUSE THE KEYA GOT STOCK IN THE IGNATION. SPEED UP OVER 30 MILES AN HOUR AGAINST A NEIGHBOR HOUSE CAUSING DAMAGES AND SENDING ME TO THE HOSPITAL.. I WANT GMC TO CONTACT ME ASAP. FYI. THE IS VIDEO TO PROVE IT.