It's ok. It's my brothers PSP and he was able to get a torrent of the game and put it in the system (with that windows programming)
The single player has time trail, single player (just put your laps and race) and drift. Then you have the license things which are pretty good and keep you busy. The cars are nice, even an inside view.
And there are a TON of tracks, like all of them from GT4 and the detail is great to them for a PSP.
Yeah, my roommate had a 360 which is why I never bothered getting one, but he's out of town for several weeks and took it with him. Used to play COD4 online all the time, that game was insanely fun. Gotta steal my little brother's 360 next time I'm at my parents' house....