@Mark

The system I am thinking about only works for low impact rear ending. I hear these accidents are a major cause of concussion and whiplash.

If the acceleration of the car goes above a safety limit, the seat will be able to move backwards a few inches, using hydraulics or a spring system to absorb much of the energy.

This will spread out the force of the impact over a longer period of time thus reducing acceleration.

But maybe the auto manufactures are already using this kind of system in newer models.


@Esthersdoll

Thanks for the links, it looks very interesting. I especially like the Lexus safety video where they show they take whiplash and neck injuries serious.

Due to the high car taxes here in Denmark, the average car is about 8-9 years old. A lot of people get injured every year because of this.