checked-no =>All Tuning Parts: On the title screen, hold [L]+B and press U. =>Kart/Wire Frame/Radi-Con Mode and Cars: On the title screen, hold [L]+B and press D. This will unlock the three extra modes and three collection cars. Kart Extra is normally unlocked by completing all tracks in all classes of Championship mode. Wire Frame Extra is normally unlocked by completing all tracks in all classes of the Expert Championship mode. =>All Cars: On the title screen, hold [L]+B and press L. =>All Tracks: On the title screen, hold [L]+B and press R. =>Expert Mode: Earn a gold medal in every race in all normal mode classes, including the license trials. =>Drift-Combo Cars: In the Drift Combo mode, you'll unlock up to three cars in the challenge courses, depending upon whether you score 10, 20, or 30 combos. =>Extra Cars/Parts: Complete each track in Championship Mode to unlock additional items. Get in third for the track, second for the track and a a part, and first for a car as well. There are different rewards for normal and expert mode.