I WAS ON HIGHWAY I25 SB IN DENVER, CO. MIDDLE LANE, CLEAR CONDITIONS, 30-35 MPH. 4 CARS IN FRONT STOPPED SHORT, I CAME TO A STOP AS SOON AS I COULD, MISSING THE CAR IN FRONT BY AN INCH. A VAN BEHIND ME REAR ENDED ME GOING APPROX 30MPH. I AM 5'1 SO MY HEAD HIT THE STEERING WHEEL CAUSING A CONCUSSION. MY COMPLAINT IS THAT NEITHER MY SEATBELT NOR MY FRONT PASSENGER'S LOCKED INTO POSITION. MY PASSENGER'S SEAT EVEN ROCKED BACK RENDERING HER SPINE COMPLETELY UNSTABLE. AIRBAGS DID NOT DEPLOY AND WE DID NOT FEEL SAFE. MY VEHICLE IS TOTALED. *TR