CONSUMER WAS HIT FROM REAR WITH GREAT FORCE ABOUT 45-50 MPH, CAUSING THE CONSUMER TO HIT THE VEHICLE IN FRONT AND PUSHED 3 OTHERS INTO ONE ANOTHER. ACCIDENT CAUSED SPLIT BUMPER/GREAT RADIATOR DAMAGE/AIRBAGS DID NOT DEPLOY,SEVERED. CONSUMER SUSTAINED WHIPBLASH AND BACK INJURIES. SEAT BELTS WERE ALSO WORN. *AK