This “HET Motor” design looks promising (if they can bring it to market, obviously.) There appear to be many advantages to the Hunstable Electric Turbine, all of which are relevant to electric cars—for example—and perhaps most significant—it would eliminate the need for a reduction gear-set, with its associated weight, cost, space, energy losses, and potential to break. (When a stand mixer fails, it’s nearly always a stripped gear or broken shaft; on the rare occasion a Tesla Drive Unit fails, it’s most often something in the reduction gear-set, not the motor itself.)
The HET motor’s most important application could be in cars (and trucks, trains, ships, and planes), but myriad products would benefit from motors that run slower and produce enough torque to obviate reduction gear-sets or belts & pulleys. A cursory look around my home reveled a number of machines that would be smaller, lighter, cheaper, more efficient, and more robust without that current necessity: blender, stand mixer, drill, washer, dryer, air-conditioner.
Linear Labs seems closer, and more likely to impact range, reliability, weight etc. than anyone claiming the next breakthrough in battery chemistry. I’ll bet Tesla is watching this: