WHILE DRIVING ABOUT 55 MPH ON THE HIGHWAY AND WITHOUT WARNING. ANOTHER VEHICLE REAR ENDED CONSUMER'S VEHICLE . DRIVER'S SIDE AND PASSENGER'S SIDE SEAT BELTS BROKE LOOSE, DRIVER AND PASSENGER SUSTANED NECK AND BACK INJURIES. THEY WERE TRANSPORTED TO THE HOSPITAL BY AMBULANCE. MANUFACTURER AND DEALER WERE NOTIFIED ABOUT THE ACCIDENT. *AK