Though only a concept, this bicycle from the mind of Bradford Waugh is more than just a piece of eye-candy. The "Nulla," meaning "nothing" in Italian, is attractive because of its minimalistic design. Specifically, the bike lacks central hubs and chain-drives that are common to other functioning bicycles. As a result, the Nulla does not currently exist in a physical form. However, many promising skeptics have already begun to see if they could make Waugh's concept a reality.