Fixed gear, steel frame, no brakes. The bike cannot coast ... A derailleur can get dinged and throw off your shifting. Your brake and shift cables themselves can break down.

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

From afar, the drop handlebars on a gravel bike, along with the integrated brakes and shifters ... giving the bike the ability to go off-road where no road bike would dare. Paired with hybrid ...

In the fluorescent glow of a re-purposed indoor go-kart track, cyclists hurtle around hairpin corners, their fixed-gear bikes offering a stark binary choice: perfect execution or intimate acquaintance ...