Ridiculous Off Topic Idea:
If other players can have CITY driving in LFS, how about "CarBall", "AutoBall", "SocCar"? Something like Soccer/FootBall or Hockey. Obviously this would not be done any time soon, as it would be way off track. I just thought it might be fun to divide the players up in my trailer in to a red and blue team.
How hard would it be to add a large Spherical car sized object that bounces, but never resets its location?
Then add 2 small finish line like objects for goals.
When the ball crosses Red Line, it gives Red Team X points, and if it crosses Blue Line it gives blue team X points. Then the ball would reset in its start location.
The rest of the arena would be made with the walls in the autocross editor.
Drift setups would rule the arena.
More complicated but it could swap sides after X minutes, or even have more than 2 teams, or more than 2 balls (cuz it takes 2 to race). No idea how crashing or car resets would be handled... guess that would be up to the server/in sim programmer