The AI car is doing crazy things. It moves quite happily along its own path, but as soon as the map starts scrolling, the whole thing goes up sh&t-creek and the paddle has already sunk.
At this point I am hoping that 'Tarviathun' is going to be able to help as he appears to be my only hope!
Anyone else that fancies a try please feel free to download a copy of the currently 'broken' D2 from http://members.gamedev.net/ols/zip/tiles.zip, and laugh at the amusing movements that the AI car has decided to partake in!!