Fav car well its not fair to chose one from all the classes so ill chose one per class.
-WTCC: E90
-STCC: C200
-GT Pro: Koenigsegg CCGT
-GT Sport: M3 GTR
the overall would have to be the CCGT, since I've been racing it in leagues it seems like its the fastest candidate for the job which is quite surprising.
Favorite track is always the temple of speed, MONZA.