I'm with Piotr all the way on this one. RA is a great track and one of my all time favourites. It's very rewarding for those with the kahunas to attack the circuit. The satisfaction of pulling a really fast lap leaves you breathless. No annoying fiddly bits, just superb fast flowing racing with a good variety of corners.
Great choice for the ILMS cars. I think (hope!) we should see a good turnout here

Just a quick point - there are several variations of this track but i find the Neel Jani Elkhart Lake V2.0 to be the best.
I can provide links if necessry.