I think that those "95% efficient" motors are not 95% efficient at all speeds and loads. From what I can grasp, the variable configuration of the rotors let's them trade speed and torque without any loss in efficiency by changing the energizing patterns in the controller. The reduction gearbox is pretty simple in design but it adds one extra component to fail, and it adds weight.
I'm curious to see if they can make the controller simple (cheap, reliable, efficient) - that seems to be the next immediate challenge.
Cool project for sure, the patents have a fair bit of good information on them. They also have a functioning prototype which is good for a company at this stage. See 60 seconds in here: https://youtu.be/yqIKZGx-06Y
I think waiting two years to get them into a car is a bit of a miss in terms of roadmap.
They mention increases in efficiency like it matters when electic motors are already ~95% efficient.
They mention cogging as a problem, when everyone solved that a decade ago by using FOC drivers.
It does field weakening by physically rotating part of itself? That doesn't sound like a good idea. At all.
A single reduction gear is complex and heavy? Uh no, its probably the cheapest part of the motor