Adding crash dummies into the vehicle that can fly out doors, windows, and the possible convertible top of future cars. Giving them a g force sensor of some sort would be nice as well.
Lol, I was about to make such a post. Well, I thought of the same, and the dummies could have a feature, which indicated how bad the crash was, like which parts of the body was "destroyed". Would be fun. And you can check g-force by pressing L, not sure how it works.