There's an issue here: For the air compressor, how does that work? There is the roots idea of two lobes, maybe a foot long each, interlocked like two gears, i

There's an issue here: For the air compressor, how does that work? There is the roots idea of two lobes, maybe a foot long each, interlocked like two gears, inside of a housing that is so tight against the lobes that there are no air leaks. So, talking a lot of friction. Then, roughly double the RPM of the compressor and double the amount of air moved. Corvette and Dodge are using roots. Then there is a centrifugal compressor: It's simpler with less friction, but double the RPM and roughly square the amount of air moved. So, at low RPM, move too little air and at high RPM, move too much. So, centrifugal air compressors, for supercharging, driven by a belt off the front of the engine, had the compressor RPM directly proportional to the engine RPM with too little boost at low RPM and too much boost, and too much power to drive the compressor, at high RPM. The beauty of the usual exhaust driven turbo charger is that the exhaust side took the square root of the exhaust flow and the cold side squared it again and, thus, moved air volume directly proportional to engine RPM -- great. But with an electric motor, could have a centrifugal compressor, the simpler mechanical option, always with the right RPM, not directly proportional to engine RPM. Of course, could also have a turbine, that is, with little blades like in a turbojet engine -- these tend to be expensive.