The article is kind of word soup, but I think the idea is that instead of using electromagnets interacting with permanent magnets to generate force, the motor uses electromagnets on both the rotor and stator. And it isn't nessesarily more efficient than a conventional electric motor, but the claim is that it costs less emissions overall, since rare earth magnets don't need to be mined to produce it. Also, it's brushless, or in other words power is transmitted to the rotor by induction instead of by electrical contacts, possibly using the electromagnets in the stator, but that's unclear.<p>It's a neat idea.