Munro Live: Beta Factory Hoist Review of Slate Battery, Motor, Suspension, Underbody, Frunk, Body, Electrical System, Software, Safety & More

[Dorbiman]

Also, the engineer made kid of a big deal about the motor being mounted to the “frame” rather than the axle. (Less unsprung weight.) Are some EVs built the other way around?

Yes, sometimes the motor is built into the differential. It's known as an e-axle

 

[AZFox]

In the video, I noticed drive axles going to both rear wheels. This makes it a bit more capable in low-traction situations. Is this typical of modern RWD vehicles? In “traditional” pickups, when you’re in RWD, only one of the two is the drive wheel.

Both wheels are driven. This 22M-view video explains how that works, and why the Center Section of a traditional live axle is called a "differential":

 

[AZFox]

Assuming Slates will be one wheel peel machines with that EV torque. A locking differential option would be nice.

Combine an open differential with ABS brake capability and you get Traction Control.

It works by applying brakes to the spinning wheel, thereby sending power to the wheel on the other side.