Disney brought one over to the company that i work for (Pioneer) as a demonstration, i guess they are big contributors or something, as i understand they are buying a bunch for the parks or something... i would assume not for public use, i got to ride on it, it was cool, you CAN NOT tip it over.
and its pretty fast, by the way you stand on it and the way it turns, i wouldnt want it to be any faster.
not worth my 5k, but for us we have HUGE warehouses so it would be good transport around them, we were also looking at the electric gopeds, at $500 a piece, i'll let you figure out which ones we went with