It’s a huge unicycle with an engine inside the wheel, and the driver sits on the front of it. It seems to be made of a monster truck and/or tractor wheel and tire.
Looks like amazing fun to ride/drive!
That one wheeled thing was at Burning Man. It got mentioned either in Just Conversation or RSU. A search on all threads that mention Burning Man ought to find it. There was an article that gave some details about its design and how it works.
from memorey it’s called the R.I.O.T wheel, they used to have a very nifty website with videos and explaining how it wokred, it’s probably still up.
I would call the R.I.O.T. wheel a monocycle. I remember seeing a video of it somewhere, probably on that old site. My logic on classifying it as a monocycle is based on the fact that you don’t balance it. Hmm. This takes us a different direction from the normal two types: one where you sit inside and the other where you sit on top. In this one you sit in front, while a big bucket of concrete or something sits out back. I wonder how it steers?
How about this (2004)?
From what i remember it has a prety complex balance system, the bucket out the front and a huge counter weight inside the wheel can be rotated relative to each other, so you can climb in and then be raised up to driving height. Steering system utilised some pretty beefy gyroscopes. Infact they explain it far better than I can.