Here comes a full-sized wheel that can be completely folded.

Designer:
Duncan Fitzsimmon

Features:

Doesn't have the poor-performance delivered by the tiny wheels on folding bikes
It is light and strong as possible and is made of carbon-fiber structure

Designer wants to make a really "high end city bike or courier bike that can fold up into a package like a golf bag, which could go into an overhead rack on a train or go into a plane locker".