Yikes! I can get to the "km 8" mark, just past wehrseifen, on the posted map going forwards, but can only get to Eschbach going backwards. First of all I don't know the backwards route all that well, so I may be able to do better later, but it takes me a good 11 seconds or so to get properly turned around and accelerating in the backwards direction...any tips on how to turn around faster?
Regarding the tracks on the disc: if you watch the demo replays in the game you can see various other cars on various other tracks. This, to me, raises the question - are those replays simply video files, like a mpeg, that are playing off the disc, or they being generated by replay data, meaning that those tracks and cars are on the disc?