In this GameCube installment of Mario Kart, Mario, Luigi and friends race together in teams of two with all new special items specifically designed for certain characters.In this GameCube installment of Mario Kart, Mario, Luigi and friends race together in teams of two with all new special items specifically designed for certain characters.In this GameCube installment of Mario Kart, Mario, Luigi and friends race together in teams of two with all new special items specifically designed for certain characters.