Normal vehicles would be tricky, but folded vehicles should pack away neatly. Try the folding shopping cart basket for storage.
Electric motors can’t fit on a folding vehicle, but smaller batteries and alternators can, so you can just install one after unfolding. Foot cranks and hand rims also fold nicely.
Again, I’m speaking about the Experimental releases. I don’t recall what all was in 0.B, but “experimental” builds are almost always just as stable as official “stable” releases, just with more content.