I DRIVE A 2002 CHEVY TRAILBLAZER 4WD AND MY SON WAS DRIVING THE VEHICLE ON HALLOWEEN NIGHT. HE WAS DRIVING THE SPEED LIMIT OF 30 MPH AND SWERVED TO AVOID A POSSUM IN THE ROAD, HE OVERCORRECTED AND LOST CONTROL OF THE CAR CAUSING THE CAR TO COLIDE WITH A TREE AT THE FRONT PANEL AND DRIVER'S SIDE DOOR. UPON IMPACT THE AIR BAG DID NOT INFLATE AND THE CAR IMMEDIATELY CAUGHT FIRE. LUCKILY MY SON WAS ABLE TO CRAWL OUT THE PASSENGER SIDE WINDOW BUT THIS COULD HAVE BEEN A TERRIBLE SITUATION. WE WOULD LIKE TO KNOW WHY THE AIRBAG DID NOT INFLATE AND WHY THE CAR WOULD HAVE CAUGHT ON FIRE WITH A DRIVER'S SIDE IMPACT?