I took a several year hiatus from auto racing sims and just picked up the latest version of Forza Motorsport last month. The graphics are mind boggling. They did a great job on the new Ford GT. If you're curious about the sim take a look at the two short promo videos below. All the footage is from the actual sim either in replay mode, game mode, or using some of the sim's other features:

promo video 1

promo video 2