sometimes when im bored and cant be assed to race anymore, i will set up an AI race on blackwood with all different cars together. I put UF1s at the front, followed by XFG's then XRG, FXO, RB4, XRT, FZ50. I think its good this way, as the quicker cars have to fight their way to the front, plus i laughed my ass off just watching the chaos that is caused by AI cars trying to overtake!, i have attached the replay for your viewing.
ai chaos!.spr
ai chaos!.spr