Motorstorm Arctic Edge for the PSP is awesome and great, I love the stage setting. So cold atmosphere, but I guess you will warm up if you can imagine you are inside a vehicle, driving, and feeling the warm engines. This somehow reminded me of a PS3 title I once saw at the local walmart, but I can't remember the name of it. The graphics could not compare, because the PSP is just a hanheld with limitations, and the PS3 is the mother of all gaming consoles.
Anyway, I do recommend this game, if you are a racing fanatic, and even if you are just a little bit into roaring cars, machines, motorcycles, and the such. You will like Motorstorm Arctic Edge for the PSP.
MotorStorm: Arctic Edge