Despite the small hardware, the game is a "full sized Gran Turismo" and runs at 60 frames per second.
800 cars, 35 tracks, and 60 layouts of those tracks.
Single-player modes contain time trials and a mode to improve driving skills.
Game will use ad hoc to offer up to four-person races on the go wirelessly.
Gran Turismo PSP will also allow the sharing and trading of cars between friends.
The game is designed to foster sharing and co-operation with friends to boost car collections.
Os pego lo que pone en el blog de GameSpot