Mario and friends once again jump into the seat of their go-kart machines for the Wii installment of the venerable franchise. Now featuring an online racing mode, new motorbike vehicle types... Read allMario and friends once again jump into the seat of their go-kart machines for the Wii installment of the venerable franchise. Now featuring an online racing mode, new motorbike vehicle types, and a special balancing system.Mario and friends once again jump into the seat of their go-kart machines for the Wii installment of the venerable franchise. Now featuring an online racing mode, new motorbike vehicle types, and a special balancing system.