When the bike builders at Stringbike set out to create a completely different bicycle, they opted for a completely unique drive system that uses paracord wrapped around a spring-loaded drum instead of the standard chain and cog system. That’s right, the Stringbike doesn’t have a chain. Power is distributed equally to both sides from the individual systems connected to each pedal, kind of like electric cars with individual wheel motors. If you opt for a multi-speed option, gear changes happen with the mechanism sliding up or down, moving plates as opposed to onto different cogs. The new system is much quieter, more balanced and, most importantly, won’t leave your calves covered in grease. The Stringbike is available in E line (carbon), A line (aluminum), S line (single speed) and D signers (limited series) options with prices starting at $1,100. And of course, you might be interested in the list of 10 Most Expensive Bicycles In The World.