[thaumasiotes]

Imagine the following:

- two people driving paper-thin cars crash into each other head-on at 60 mph. The cars divide the energy of the collision evenly, disintegrate, and pass on a lot of energy to their passengers.

- two people driving huge voluminous and massive SUVs crash into each other head-on at 60 mph. The SUVs divide the energy of the collision evenly, warping into unrecognizable crumply wads of steel. The passengers take less damage than in the earlier scenario.

This is impossible?

[SixSigma]

Sounds like you're restating my premise.

[thaumasiotes]

Yes, the question mark indicates that I want you to confirm I'm understanding correctly. Seems so. Why is that impossible? We know from the trivial case of a person flying along at 60 mph with no car (maybe they were fired out of a cannon?) that you can reduce damage to the passenger by adding mass.