IT WAS A FOUR CAR PILE UP. A CAR THAT WAS TWO CARS IN FRONT OF ME SUDDENLY STOPPED AND CAUSE TRAFFIC TO COME TO A COMPLETE STOP, NOBODY WAS HIT AT FIRST. A BLACK TRUCK DID NOT REALIZE TRAFFIC HAD STOPPED AND HAD A LOT OF SPEED ON HIM AND CRASHED INTO A VAN THAT WAS BEHIND ME WHICH CRASHED INTO MY TOYOTA COROLLA WHICH CAUSED ME TO RUN INTO THE SUBURBAN IN FRONT OF ME. MY CAR AND THE VAN WHO HIT ME WERE TOTALLED OUT, BUT DURING THE WRECK MY AIR BAG NEVER DEPLOYED AND THE GUY WHO WORKED AT THE TOWING PLACE SAID HE DOES NOT SEE WHY MY AIR BAG DID NOT DEPLOY. HE SAID IT SHOULD HAVE DEPLOYED. *TR