I’m just surprised that nobody has thought to keep the electric motor unsprung, and just connect the axis of the motor to the wheel with a couple of U-joints. Similar to the system that front-wheel drive currently uses, only each wheel has its own electric motor. This would allow for the use of larger motors.

john,
as far as vehicle dynamics is concerned, i see it as a plus given the wheels could replace the engine/electric motor and lower the overall center of gravity. weight distribution could be more evenly divided as well between the front and the back (depending if it is 2WD or 4WD).

in terms of weight, the key question would have to be the engine/electric motor it will eventually replace. if the weight of the power plant it replaces is greater than the wheels, this would be a huge advancement and additional boost in efficiency.

reliability is always a real concern with start-up products.

Reliability has got to be tough to achieve in an environment that is impacted by bumps and pot holes, vibration must be severe. I would have to see reliability proven over several years before taking a chance. They could mitigate this with a very strong warranty that guarantees replacement no matter what.

LOL!

Adding 68#/wheel — what will that huge increase in unsprung weight do to vehicle dynamics?

Think of going over potholes, or a SUV going off road, w/those heavy wheels….

Color me highly skeptical.