I wonder if it would be possible to build a feature, that shows your virtual position on the track, if you are about to pit this lap? (in 2d view)
Could help deciding to do a earlier stop in order to avoid a group of cars battling for position.
Example: you are currently third, have fuel for 3 more laps, but the guys 25 seconds back are currently faster. With this feature, you could see, that an earlier stop would get you out in front of this guys rather than behind if you'd stick to your original strategy.
It's pretty much what they use in real racing too.