Comment by Cockbrand

Bicycle gear shifting technology has come a long way since then, with very reliable, even electronic systems. But we're still messing with dirty, grubby chains that need to be maintained properly and are worn out after 5000km at best. I think that the bicycle drivetrain is quite rife for disruption. Someone has yet to solve the problem of efficiency - a new drivetrain is supposed to have less than 1% power loss. But a new concept could really change the entire industry, and it's quite a big industry.