WHILE IN MOTION CONSUMER WAS HIT BY ANOTHER DRIVER ON THE REAR DRIVER'S SIDE. VEHICLE SPUN AROUND THREE TIMES. DURING THIS INCIDENT, SAFETY DEVICES FAILED TO OPERATE AS DESIGNED. DRIVER'S SIDE SEAT BELT DID NOT LOCK; THEREFORE, CONSUMER WAS THROWN FORWARD. SEAT BELT IN THE BACK SEAT WHICH SECURED THE CHILD SEAT DID NOT LOCK, THROWING THE SEAT FORWARD AND OUT OF ITS ORIGINAL POSITION. *JG ...*AK