CAR STATIONARY ON HIGHWAY AFTER TRAFFIC CAME TO A STOP DUE TO A TRAFFIC INCIDENT AHEAD. REAR ENDED BY VEHICLE GOING IN EXCESS OF 40MPH. CAR PUSHED INTO CAR IN FRONT (CAR 3), SPUN AROUND AND HIT THE SAME CAR (CAR 3) IN THE FRONT. AIRBAGS DID NOT DEPLOY. BOTH DRIVER AND PASSENGER WERE ADMITTED TO THE HOSPITAL WITH INJURIES.