I downloaded it the other day after seeing it as a series coming up on Race2Play. It is quite a good little freebie using the GTL game engine with M3's around 2 versions of the Nurburgring, anyone else tried it ? its only 340 odd mb & has online play worth a look if you get chance. Link below if it works !

http://www.m3-challenge.com/index.php?id=2&L=0

Not tried it, but I'd noticed it was going to be used at R2P too. You thinking of going in for some of the events?

Yeah think I may do ,the game is quite good because you can't alter setups so it's an even playing field. There are all the steering options to calibrate your wheel just like rFactor. Online code is okaY I've done quite a few races there is traction control /abs etc that can be set to on or off depending on who creates the server.It is pretty much a self contained game but with one car & track type.
Graphics are pretty good aswell & there's all the usual options to turn things up to max or down depending on machine spec.
It's definately worth a look as it's free anyway.
Oh & you can do night races aswell .