[Old Tele man]

...two supercharger problems for cars: (a) VOLUME and (b) PRESSURE.

...unlike home air-compressors that work on "a little bit of air" getting squeezed LOTS of times to eventually buildup a usable VOL/PRESSURE combination, a car compressor needs LOTS of air volume NOW, not a couple minutes from now.

...some of the funny cars expend upwards of 800 hp just in rotating their superchargers at full-tilt. At that rate, you'll need HOOVER dams electrical power lines to power an "electric" supercharger for your car.