Not sure about this but when you set up a server with this layout run a practice session and let people run their times. After certain time copy those times and arrange grid. (Not sure about this but thats how we did it in LFS Karting League)
Yeah and also airplanes, hmmmm what else? Real cars, real tracks, street racing, tuning cars, being able to get out of the car and walk through the city. Be able to eat food, swim, buy houses. Be a gansgster. Ok I cant think of anything else. Somebody continue the list.