EV only twice as efficient, until you consider generation and transmission losses.
Now let’s consider the rest:
Idling – that can be solved, some by traffic control, some by “instant on” controls.
Also there are variable displacement engines – shut off cylinders when not needed.
Regenerative braking – which I like with Hybrids
Drivetrain – maybe EV can be a bit better, if you place motors in hubs (but then you have nasty suspension issues – unsprung weight is bad)
Rolling resistance – tires – trade off of traction vs rolling resistance, AND proper inflation is major issue – moot
Air resistance applies to all vehicles – moot
Stereo, A/C etc also applies to all – moot
Lets now look at the energy to make the batteries, disposal, carrying excess weight of batteries when partially discharged.
Conclusion – inconclusive
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