1) The Corvair is a unit-body constructed vehicle, with no engine up front, the Corvair has a good sized crumple zone.
2) I placed a couple of u-joints on the steering column shaft so the steering wheel would not be driven into my chest.
3) I had 4 point harness seat belts.
4) I had no delusion that the Corvair isn't as safe as a new vehicle.
5) I really pay attention when I drive and have not been involved in any car crashes.
6) The video you linked has already been criticized because the NTSA removed the engine and transmission of that 1959 Chevrolet. Therefore not a true test.