Thanks! Development came along very well so I didn't have to resort to (very) dirty tricks to gain some extra bytes. AI is simple: they adjust angle to go straight to the next waypoint but they take their foot off the accelerator a bit when they are turning. So, they are very fast on straight sections but slow down on curves. I tried this simple logic and tweaked the parameters a bit. Surprisingly, it was enough for a decent AI. Different cars have slightly different parameters and different waypoint offsets, so most of the time they differ in their path.