I had an idea of spawning cars already going a certain speed. Some cars, mostly trucks take very long to get upto speed. This option could be in the world edit or directly in the radial menu. Speeds could vary from 1mph to 200mph, and modded cars could have these values changed. Whenever you'd respawn the car, it would spawn at the speed selected.
just get your car up to speed and move the free cam to wherever you want the car to be and press f7. what would be the use for such a feature anyway.
more precise intersection crashes i guess. its a bit annoying trying to get a truck to like 70mph everytime you respawn it as well.