I guess it would keep the rain off. I'm not sure how it would be any more fun than riding a motorcycle, though. Less, in fact, without being in the wind. I guess it has a heater, too? Air conditioning? Probably a stereo, too, right?
I like the idea of it being more for commuter transportation rather than a "powersports" toy. Certainly could help relieve congestion in big cities if more people drove them instead of SUVs.
I think it could be revolutionary if it sold for $10,000.00 and was marketed to the "mini" crowd.