I just added starting grid. The original kn5 files for track (buildings, walls, etc. ) are untouched and you have to have them !
It depends on your hardware how many AI's will be working fine in single-player mode!
It also works in multiplayer mode but it depends on the server and client hardware as well as in single-player mode !
up to 60 cars for Nordschleife Endurace, Endurance Cup 1.1
Original Kunos track is untouched