So wait, if you can induce an electric current by spinning a

>>17419939
We already do that.
Your car has a small generator, called an 'alternator' connected to the engine's crankshaft. It mainly powers the spark plugs while the engine runs, but also powers accessories as well.

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>>17419967
That's what a tarbo does though

>>17419939
it would suck too much hp from the engine.

Did you think the battery just held that much energy?

The battery is just there to start the car and power the electronics when the engine isn't running. That's why it goes dead and stops running your fuel injectors if your alternator isn't working

Why not use exhaust gasses spin a turbine to generate the current for injectors?

>>17419939
Permanent magnets are more expensive, OP. Cheaper to use alternator+battery instead. It's simple economics.

>>17419976
That's a supercharger you fucking retard, you can even see the pulley in plain sight