Well, I did have a Sinclair "computer" (more a note-taker, and excellent as such)... but considering the difference in comfort between a 16" and a 20" folder, I got my doubts this one would take the place of a bicycle... an improvement and a time-saver over walking, THAT I can believe. It might have its niche.
~'spin!~ but it IS great people are thinking outside the box.. or frame, or whatever. Other examples in the left sidebar on your link's page.