G3ckoG33k writes: If you thought you knew that the "wheel" had already been invented, think again. There is an Italian company that has designed a new exercise bike which looks more like a wheel than any other exercise bike you have seen. It is of course made in composite material and would probably be Darth Vaders bike of choice. The design is spectacular. Laminated kevlar would probably be robust enough for armchair athletes like me too. There is also a video of it.