For people just too darn lazy to walk

Wow, amazing. Wonder where that would be used.

I'm not so much thinking lazy people using it, as people who have physical problems with walking and/or standing for long periods of time. It's smaller than the Jazzy motorized chair, and probably can be more easily stored.
just have to wonder how much of a sense of balance the rider needs in order to remain on it.

My bad knee's would love it, but I'm enough of a klutz I'd have the same concerns about balance issues as Denny mentioned.

Nifty. I sure could use one!