[Russell Sobie]

You could do something similar to this in IL-2 1942 for practicing dogfights or bombing runs or whatever... but that sim had a whole toolset for creating missions. Likely the closest thing you could do for AC would be to modify individual tracks, and I don't think there's a way to start any cars in any other state than 0 velocity pointing in a particular direction (like pit slots or hotlap starting locations).