Thanks for Server. Well I think for a racing fun mod it would be too much effort to make it look like in Mafia with all the scene objects. You would have to export all the models to H&D2 format, place them with an editor and give collision to them.
Played it a bit today and it gives some memories. I remember I used to do my best laps in 1:26-1:27 and it was very tricky. You have to be very careful with steering and everything.