OWNER WAS DRIVING AT APPROXIMATELY 55 MPH AND WAS REAR ENDED. UPON IMPACT, THE SEAT BELTS FAILED TO RESTRAIN THE DRIVER AND THE FRONT PASSENGER. THE BELT LOOSENED. SINCE THE SEAT BELTS LOOSENED ON THE FIRST IMPACT, THE OCCUPANTS HAD NO PROTECTION AFTER THAT AND WERE THROWN ALL OVER THE CAB OF THE VAN. *BF