Here's a better look at the Shadow Motorcycle big size RC racer & its controller. You can see their solution to keeping this upright on '2' wheels: adding very tiny wheels to the bottom/'engine part' of the bike so it technically has 4. The bottom part of the bike is also likely a lot lower/bigger and wider than it normally would be. The rear wheel is the one that drives it forward, the others just keep it upright & the front big one helps it turn. The Shadow figure looks nice though, and has good detail.
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