TWO CARS AHEAD OF ME WAS GOING STRAIGHT AND ALL OF A SUDDEN TURNED INTO A STRIP MALL WITHOUT INDICATOR, THE CAR IN FRONT OF ME SLAMMED ON THEIR BRAKES AND SO DID I , BUT I STILL ENDED UP REAR ENDING THE VEHICLE IN FRONT. I THINK MY SPEED WAS AROUND 30 AT THE TIME OF IMPACT. I HIT MY CHIN TO THE STEERING WHEEL. GOT MULTIPLE CUTS INSIDE OF MY MOUTH. AND COUPLE OF THEM ON MY FACE WHICH REQUIRED STITCHES. MY AIR BAG DID NOT DEPLOY AND NEITHER THE SEATBELT PREVENTED IT, WHICH I THOUGHT WAS ODD. CHECKED WITH CADILLAC IF HEY WERE AWARE OF ANY PROBLEM WITH THE CAR. THEY DENIED THE EXISTENCE OF SUCH AN ISSUE. SO I WANT TO GET THE VEHICLE INVESTIGATED , SO THAT NOBODY ELSE SHOULD GET HURT THE WAY I DID; ALSO I HAVE ANOTHER CADILLAC AND NEED TO KNOW. WILL REALLY APPRECIATE IT. THANKS