Rivian's TM-B electric bike

Not affiliated but I'm looking into converting my commuter bike with a kit from https://ebikes.ca. Seems to make more sense to turn any of the million bikes out there into an electric one using a reusable kit than buying a single purpose electric bike that will end up on the landfill once the company goes bust because no one wants to push around a bike that heavy.

Self-plug: you can take a look at our repairable and sustainable battery at https://gouach.com. If it gets depleted, it's super easy to replace cells, getting you a whole new battery for $50 (price of cells) instead of buying a new $200 - $500 battery

I disagree, I went that route and ended up regretting it. While converting a regular bike to an e-bike does work, a standard commuter bike is designed to carry a person’s weight with the center of gravity in mind. Adding an electric hub motor and a 20 lb lithium battery to a frame with cantilever brakes just feels sketchy. A properly designed e-bike typically comes with four-piston hydraulic brakes, and the placement of the motor and battery is engineered to maintain balance and handling.