Good luck on writing your car game. It should be nice and simple to make in 2D using DelphiX, although you may want to look at some of the alternatives for future projects as you'll soon reach the limitation for DelphiX.

I've never written one myself, but I imagine the AI for the opponents would be a bit more complicated than a shooter as the opponent cars have to find their way around the track.

This can be done by using a waypoint system. As the opponent car reaches one waypoint, it is informed of the next and steers towards it. Some waypoints can have flags to say that the opponent should hit the brakes because of a sharp corner and other waypoints could tell the opponent to go faster down a straight part of the track.

2D or 3D, you'll still have the AI system to consider.

Best of luck.


BTW: do you have a link to your starfighter game? I'd be interested in playing it.