No Smoke MTB is an Italian company who has come up with a gear box transmission solution. By using two 11 sprocket cassettes in parallel, the chain is shunted using rollers on tracks and guides to elicit 11 speeds of useable gears.
All okay so far, but what's interesting is that it's been designed to allow gear changes under pressure - for example, when climbing or sprinting - which breaks from the norm of other systems which are designed for gravity assisted applications like downhill racing. It's still just a prototype and the detail does not conform to the fast developing G- Box standard which could hinder its future.
See nosmokemtb.it for more and working videos.