Yeah this confuses me. I was under the impression that every electric oven and clothes dryer in the US was 240 (220) volts already. I was not aware or tracking that 240v was an issue. Is that the case in places in the US?

Keeping in mind that US electric infrastructure is the oldest in the world and fragmented across a slew of jurisdictions with their own building codes that electrified in different decades, thus making it impossible to say anything with 100% certainty: US homes already have 240 volt service, but split-phase so it often appears to be 120 volts. I edited the prior comment with an informative video.

Nearly all US homes have 240V to the electric panel, and some have it for specific places in the house (though many places are almost entirely gas dryers/ovens), but you would need a special outlet run to charge your car at 240V since almost all regular receptacles are 120v. Even the heavy duty receps in garages and utility spaces are most often just 20A/120V instead of the standard 15A/120V.

Quotes for a new 240V line are often >$1K which is affordable in the context of a household improvement but not exactly pocket change.