Airbags, seats, and headrest all failed. State Farm insurance currently has the vehicle. I do not know if the people has been inspected by anybody. The vehicle had no warning lamps message or other symptoms of problems or failure before the collision. I was traveling in the far left lane when traffic came to abrupt stop and I was able to stop 10 to 15 ft from the vehicle in front of me. Two vehicles in my line behind me swerved out of the way. Then a semi truck with a trailer rear-ended me. The front end of the semi truck struck the rear end of my vehicle getting lodged inside my vehicle. My car was then pushed into the car in front of me and dragged 100 to 200 yards down The highway by the semi. The seat belts did not lock. The airbags did not deploy. Both front seat frames were bent and ripped apart. The rear seat that's became detached. The headrest for the front seats flew off. All four seats were occupied by adult males all weighing around 190 pounds or above. All four occupants were wearing seat belts. I the driver was knocked unconscious and received a concussion plus facial damage/injuries. Rear passenger side occupant received a broken jaw and a skull fracture. The other two passengers were also injured. All four passengers of the vehicle were transport to emergency room via ambulance.