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I'd say that that idea hasn't taken off because of the whole alternator dynamo thing...
...dynamos are dependent on brushes and commutators which wear and stop doing their job - whereas alternators electrically speaking don't depend on mechanical contact.
However these days with modern electronics and some electric cars using multi-phase alternating currents from batteries (Tesla motors for example) =>
If you could reliably produce a 3 phase power supply from a car battery for long enough to start an engine and then have your induction motor behave as an alternator...
...I think you'd be onto something as typically you'd need a smaller multiphase alternating current motor / alternator for an equivalent power output from a single phase motor / alternator motor and a DC motor / dynamo set up.
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