The question, is it legal, to drive a rig, from the sidecar, as we've seen done here a few times. Could one plan on traveling across country, driving in the sidecar, no one on the motorcycle, and be legal all across the land. Supposing a state trooper stops you out on a desert road, out in the desert and says, you can't be doing this. How far would you get if you tell him, it's a grey area of the law. Or isn't it?