That's an interesting point about Polar Moment of Inertia. A tadpole also leverages whatever Torsional Rigidity the chassis possesses. But the single drive wheel instead of three (in-hub electric)?
If I had an off-road vehicle, instead of a pickemup, I'd want it to be a VW Beetle with the [rear window] engine and rear lid removed and a 6' tall chain-mail torus tire over a tractor inner tube slotted in there. Hubless—if it was jacked up a bit the bumper could run through the hole.
