The character select icon for Wario is predicated on his marketing artworkMedia:Wario SM64DS artwork.png from this game. Karts, bikes, and ATVs all return in Mario Kart World, the latter two subsequent their absence in Mario Kart Tour. In the situation of bikes, regular bikes return though Activity bikes don't. https://www.youtube.com/watch?v=zxOOedYM0Xc