Building a tank, even if it’s a mini replica, needs an engine with a decent amount of torque. [MWiG] first tried reviving an old ATV engine, but it did nothing more than sputter and die.

That's why he's now created B-Unstoppable, which swaps wheels for neoprene tank-like treads. As with the original B, the idea with this model is that users can drive it along the ground until the ...