ON 12/17/07 I WAS IN THE BACK SEAT OF A 2001 CHYRSLER 300M THAT WAS INVOLVED IN AN AUTO ACCIDENT. WE SLIPPED ON ICE AND HIT A TREE AT APPX. 50 MILES AN HOUR, MY LAP BELT HELD MY BACK WHILE MY SHOULDER HARNESS DID NOT. I WAS SITTING BEHIND THE PASSENGER. THE CRASH CAUSED ME TO HAVE BROKEN RIBS, A BROKEN BACK AND INTERNAL INJURIES ALONG WITH BROKEN FACE BONES FROM HITTING THE SEAT IN FRONT OF ME. THE CAR WAS TOTALED. IS THERE ANY DEFECT THAT I SHOULD BE AWARE OF THAT WOULD CAUSE THE SEAT BELT NOT TO LOCK UP OR THE CAR TO LOOSE SUCH CONTROL ON THE ICE? *TR