I WAS VERY SUPRISED TO SEE THAT WHEN I DID HIT THE CAR IN FRONT OF ME THE AIR BAGS DID NOT COME OUT OR DEPLOY, OUR SEATBELTS DID NOT LOCK. NO ONE WAS HURT. GOD FORBID THIS TO HAPPEN AGAIN BECAUSE I DON'T KNOW IF THE AIR BAGS WILL COME OUT THE NEXT TIME OR THAT THE SEATBELT WILL LOCK UP. I WAS GOING ABOUT 75 MPH ON INTERSTATE 45 BETWEEN PARKER AND CROSSTIMBERS, THERE WAS AN ACCIDENT THAT OCCURED ON THE SHOULDER-I WAS IN THE LEFT LANE AND ALL OF A SUDDEN EVERYONE STARTED BRAKING. I FELT I STOPPED IN ENOUGH TIME. I SLAMMED ON THE BRAKES AND SLID A GREAT DISTANCE BEFORE HITTING THE MINIVAN IN FRONT OF ME. A SCRATCH ON THE BLACK BUMPER IS ALL THAT HAPPENED TO THE MINIVAN. IF I PRESSED ON THE BRAKES, WHY DIDN'T THE SEAT BELTS LOCK, WHY DIDN'T THE AIRBAG COME OUT? I DON'T KNOW.