The Priority Gemini Smart.Shift gravel bike has a novel drivetrain that perfectly suits some cyclists. But, there's a caveat.

However, the Heritage Altitude is a pretty normal e-bike in the way that it functions, but the Chainless Altitude (CA) is something else entirely in that it eliminates the chain, crankset ...

It’s still steerable, but missing are the cranks, chain, and brakes. That’s okay though, the bike is low enough for your legs to reach the ground – you start it up and come to a stop Fred ...