ultimate wheel?

Start with a bicycle. Remove one wheel. Remove the saddle. Remove the frame and handlebars. Remove the brakes and drive-train. Jam the pedals into the rim and what have you got? A penny-farthing with only the farthing?

I just watched a student attempting to ride one of these a few metres. It was the most inelegant thing I have seen for quite some time! Darn funny though. I wonder how long before somebody tries to cross the Nullabor plane on one unsupported.