Now Mr.Ripley, you don't know what the hell you're talking about.
Formula cars are made in two pieces. YOu have the outer shell and you have the monocoque. The outer shell which everything is attached to is designed to break away easily to disipate energy and impact. That is why if you have ever seen an F1 race they explode on impact. When you take the outer shell away you are left with a square box in which the driver sits in. Also known as the monocoque. Now, the reasoon the driver survives the high speed impact is for a number of reasons. a) The outer shell has disipated a portion of the energy from impact. b) The 3 point harnesses which hold the driver tight. c) The helmet on the driver's head.
You will notice that in an ordinary vehicle you don't often find 3 point harnesses or people wearing crash helmets.
If you were to take away crumple zones from a normal every day car, you'd have more people suffer brain haemorrhaging due to rapid deacceleration. Many traffic accidents in the 70's were fatal due to just this reason even though they were at a relatively low speed and very survivable today. All cars today are designed for impact absorption through crumple zones. Even those big Chevy trucks. Many times people contribute a big Jeep type vehicle disintegrating a normal saloon type vehicle due to the Jeeps more rigid construction, but mostly it is due down to the height because the Jeep type vehicle often has its bumper reaching roof pillars of the normal saloon, which is a very week spot and so causing major damage. In reality, even a big Chevy have crumple zones and will disintegrate if driven into a wall.