Man oh man, i wish i knew how to do this. Found an excellent site for a track. It's in Hong Kong and includes Kennedy Road and Queens Road.. Take a tour with google earth.. http://www.4shared.com/file/139616970/564bce5a/Kennedy_Road_Course.html Just picture yourself thru the forest with twists and turns and great elevation changes. Then turning to on a highway going up and down doing 300km/h.. But i guess this kind of project would be HUGE as you have to include famous landmark like Hopewell Center, Bank of China and twin towers Four Seasons/Conrad Hotels in there..