You want a real track? I know a track, MUCH shorter than the Nürburgring, yet, just as challenging. It's called the Ring Djursland. Located in Denmark, at 1.75km, it is extremly short, yet, definetly challinging. It has a stupid amount of elevation change, and, one of THE toughest corners I have EVER seen.
That big long right-hander to the right of the picture. You'll see what I mean in the video clips.
First is a video from what I THINK is rFactor, not sure though.
http://youtube.com/watch?v=qmtCJ_4KunI
And secondly, a veiw from the inside of a Citröen Saxo, one lap around.
http://youtube.com/watch?v=gd4vjIWpfAs
Now, THAT is a track I'd like to see in LFS.
Cheers,
Matt.