LEGO Super Mario | Mario Kart: Baby Mario vs. Baby Luigi 72034. Join balloon-bursting Mario Kart™ battles with Baby Mario in his Biddybuggy or Baby Luigi in his Tri-Speeder. Launch shells and knock down 3 balloons. Interactive LEGO® Mario™, Luigi™ or Peach™ figures, sold separately, trigger Mario Kart sounds and visual effects. Each buildable car measures approximately 5 cm high, 10 cm long and 7 cm wide.