I couldn't figure out the best forum for this, but figured this was the best place for a small RV. http://www.nydailynews.com/autos/mini-getaway-mini-debuts-world-smallest-luxury-camper-article-1....
If I wanted a tent that high up, I could buy a trailer that is intended for Jeeps which does the same thing, and also provides space for a Porta-Potti, stove, and other sundries.
It is a nice idea, but a small motorcycle tent trailer just seems more sensible.