Mazda used a two-rotor design engine with two turbochargers in its ... which burns cooler than regular gas, to manage heat. Further down the line, the Y12 will run on methanol.

[Levi] whipped up his brushless DC motor design in OnShape. The motor has six coils in the stator, with the rotor carrying eight neodymium magnets. It’s an axial flux design, with the rotor’s ...

giving the rotor a little boost. The difference here is that rather than low-friction sapphire bearings, this motor uses zero-friction magnetic levitation using pyrolyzed graphite discs.