MY SON HIT A TRAILER FROM BEHIND. TRUCK DECIDED TO BACK UP AT SAME TIME MY SON TOOK OFF. AIR BAGS DID NOT GO OFF. EXTENSIVE DAMAGE TO FRONT OF CAR AND FRAME. SON SUFFERED A STIFF NECK AND ACHY BACK. THE AIR BAGS DID NOT WORK ON TWO ACCIDENTS T HIS CAR HAS BEEN IN. *TR