I played this for 5 minutes last week, and I was absolutely impressed just at the sounds, the immersion that gave me, after having played GT5 for two years straight. I sincerely hope Gabe Newell (owner of Steam) is granting Simbin money (as well as us, the audience), to get this game where it needs to be, by the time Steam Box hits TV's across North America this coming fall.
PD has real competition on its hands now.
And it really feels like I am at various points on the track, as I drive through it, it just feels great so far. I am also happy to see they have been really implementing lots of updates to their physics and car models, and require to redownload the whole game executable, that's a bit much imo, but perhaps it's needed instead of to repatch the thing , over and over and over...
The game sounds and looks really good, it's a different driving game, and keeping fingers crossed to getting the Nurburging Nordschleife track on it.