We can supply enough power to suit current demand including plug-ins and you are assuming that our welectricity supply in 2050 when we're carbon neutral will be the same as today.
$30 Billion P/A savings on import petroleum will biuild alot of green power generation and keep in mind that that $30 Billion annual savings will be ongoing.
The only logical argument to counter that is that on average EVs cost 20% more than ICEs but as we have seen year to date, Chinese EVs are dropping in cost and with EU & US import tariffs on them, our Chinese EV costs are likely to drop.
EG: One can now but a Chinese EV the same size as a Toyota Corolla at the same price as the Colrolla and even less than a Toyota Corolla Hybrid.
So, in summary, you are simply taking the status quo as set rather than a EV/electricity supply moving moving with demand as per economic imperatives
Had you been in the 1920 you'd likely be advocating the horse & cart over the automobile, IMO, and we all know whare all that horseshit led to,,,eh?