Rivian has a skunkworks, and earlier this year they created something so potentially impactful that they created a spin-off to bring it to market. They tapped Rivian VP Chris Yu to lead the new company, called Also, who teased what they were working on: "What we're building is easy, intuitive, and tech-enabled in all the right ways," he wrote. "It's a joy in the most childlike sense."Now they've pulled the sheets off. Also is a mobility company designing electric sub-car vehicles "to rethink how we get around in today's world," starting with this TM-B, a modular e-bike. The heart of the bike is this DreamRide drive system, containing the motor and the battery. When you pedal, you're not driving a chain, but are instead driving a generator. The motor then drives the rear wheel via a belt. The battery is "vehicle-grade," the company says, meaning its quality, safety and engineering standards match what you'd find in an EV (the regulations for e-bike batteries are considerably less stringent). The 1 kWH battery can be popped out for charging or to use as a powerbank. As for the modular part: The seatpostwhich they're referring to as the "top frame"--can be popped off of the bike, and you can swap in different ones for different applications. At present they offer a standard Solo frame, a Utility frame for carrying stuff and a Bench frame for carrying a passenger. Both wheels feature full suspensions. The front and rear LED lights are decidedly Rivian-like. There's a 5" touchscreen that can be used for navigation or to display riding data. The bike is said to have a range of 60 to 100 miles. They're currently taking pre-orders for the $4,500 bike and say it will ship in spring 2026.