I get what you are saying but look at what happened to the 60s car here. Seatbelts don’t do anything for you if the other car is suddenly parked in your pelvis.

I get what you are saying but look at what happened to the 60s car here. Seatbelts don’t do anything for you if the other car is suddenly parked in your pelvis. None of the hard parts seem to reach at least the torso of the dummy in the modern car while in the 60s car the dummy ends up being pushed virtually into the back seat. Sure the seatbelt would have held it in the seat but it that does nothing as the bent door and the grill of the modern car crushed it’s lungs and liver areas. The airbag here wouldn’t have saved the dummy either of course. The thing that would have is a better crumple zone.