http://www.racesimcentral.net/
Look for Queensland Raceway, a real-world track in Australia, flat as a
pancake (sort of an Oz Albi), and 1.9 miles around. I believe the track
record is held by a Superkart. Currently gearing up for a big V8 Supercars
meet on my birthday (July 18-200. More RW info here:
http://www.racesimcentral.net/
The N2003 version of this track should be perfect for future class mods,
like the ones Wildfire are working on (Craftsman Trucks now; later,
presumably, authentic Aussie V8s).
It's also wide enough for 3-wide racing, so it oughtta be popular online.
There is no learning curve: you can see deep into every turn you're
approaching.
Enjoy!
--Steve Smith