1. all regular Club Kart games is "European Session", it is part of full game name.
2. there is 3 versions:
2001 with card reader support (so you have to play the game a lot to unlock all 12 courses);
2003 with no card reader and everything unlocked;
Cycraft ver - same as 2003.
3. all game versions have same set of courses.
there is also "Club Kart Prize" and "Club Kart Prize Ver B" medal games, which is very different compared to regular versions, and yes, have different set of tracks.