The game, however, remains its own reward. Some will become bored with simply racing and tuning and racing and drifting, only to unlock cars or beat their own time, but others will get lost in the experience of trying out cars and mastering racing. This keeps nearly everything that made the actual act of driving so pleasurable from its big brothers, even if it sacrifices some of the modes and options.
For forty bucks, you can have Gran Turismo on the road. You can race against your friends on car trips, or simply while away the time completing your car collection. Mastering the game and seeing all the cars would take hundreds of hours, but I wouldn't be shocked if some people put that much time into the game.
The Gran Turismo series has a reputation for being unapproachable, but you can still have a good time without diving into the tuning aspects of the game, and turning on the driving line will give you a good sense of the game; I played with it on for the first hour or so before I was comfortable making my own racing lines.
To put it very, very simply: this is the best portable racing game you can buy at the moment. At times it feels almost like a magic trick; Polyphony has done some amazing things with the hardware. It's very real, however, and in a few weeks it will be here. Save some money in the ol' gaming budget, whether you buy a PSP Go or not, you'll want to pick this game up.
http://arstechnica.com/gaming/reviews/2009/09/gran-turismo-psp-review-portable-racing-grows-up.ars