I haven't tested this in-game, so maybe it's a thing already? I'd love to see the ability for people to exit a moving vehicle result in some pretty serious damage based on the speed of the vehicle they're in.
Maybe touring speed you run a small risk of getting a scratch based on agility, cruising more so, and when you move up into rapid and racing you better be a god damned ninja to tuck and roll out and come out still able to walk.