WHILE SLOWING DOWN CONSUMER'S VEHICLE WAS REAR ENDED AT ABOUT 40-45 MPH, AND DRIVER /PASSENGER SEATS COLLAPSED ON IMPACT, CAUSING DRIVER TO FALL ON TO CHILD AND INJURING CHILD, THE PASSENGER IN THE FRONT SEAT HIT THE BACK OF HIS HEAD ON THE MOUNTED PORTION OF THE SEATBELT.*AK *NLM