2007 HYUNDAI ENTOURAGE SLOWED FOR A SCHOOL BUS WAS REAR ENDED AT HIGH SPEED BY A PICK UP TRUCK. THE CAR IS NOW LISTED AS TOTALED. NO AIRBAG IN THE BACK OF THE VAN WENT OFF. IF MY DAUGHTER WAS IN THE REAR BACK SEAT SHE EASILY WOULD HAVE BEEN SERIOUSLY INJURED IF NOT DEAD. WHY DIDN'T THE AIRBAG ABOVE HER HEAD (WHERE SHE NORMALLY WOULD HAVE SIT IF SHE WAS IN THE CAR) GO OFF? *TR