In many racing games, it's possible to race against a 'ghost' car (usually a previous run, or someone else's run).
It would be neat if you could toggle seeing the 'best' car as a ghost alongside your current car.
It would also be neat if, in the event that you ever implement global leaderboards, you could also see the current 'winner' car.
Much more unlikely but still amusing as an idea would be to see the top N cars all running simultaneously -- obviously not affecting each other -- with the camera centered on the current fastest car.
