Played it from about 3:30pm till 12:30am yesterday. So far I love it. Sooo much better than Gran Turismo 5 IMO. I played. GT5 for about 20min, then shut it off. Played it for a few min 2 other times to give it a 2nd chance and still hate it.
I don't have a ethernet cable run to my xbox @ the moment, but as soon as I do, I'll check it out.