Rivian's TM-B electric bike

So the interesting thing about this is the ... peddle-by-wire drivetrain? So unlike a normal e-bike, when its battery dies it turns into a stationary bike.

I love ebikes and generally like what Rivian does, but in a very competitive market it's hard to see the appeal of this.

I would hope they designed it where you can keep riding. It seems possible. Pick some charge level (say 20%) and provide less and less power assist as you approach that. Once you hit 20%, a control system tries to keep it about 20% charged. Basically you enter a mode where the battery becomes a buffer (between the pedal and wheels) rather than a power source. The bike would feel sluggish, but it wouldn't stop working.

You'd have to pedal rather hard (equivalent of riding 21.7 mph) to provide 250W of power[1], which is the minimum for most ebike motors.

1. https://a2zcalculators.com/science-and-engineering-calculato...