Ever since Rivian spun off its "micromobility business" into a standalone startup called Also earlier this year, there's been much speculation about what kind of vehicles the company is working on.

Spinning off from Rivian, the TM-B e-bike is Also's attempt at a do-it-all e-bike. It's pitching it as flexible enough for commuting, trail riding or kid- and cargo-hauling because its modular frame ...