Again, please explain to all of us what a 220/240-volt electrical supply is and how it works. Otherwise you are just spouting nonsense that you read somewhere...
It isn't a matter of whether or not your electrical service installation is capable of 220v/240v service - it is a matter of whether or not you have the spare 220v-240v CIRCUIT installed and available for use - or whether you would have to HAVE that circuit installed to charge your EV....
You continue to spout nonsense in support of EV's and the more you post the clearer it becomes that you really have no clue.
FWIW, my neighborhood was built in the late 1970's (the electrical permit for my home is dated 1977). Yes, I have a 240v circuit for my clothes dryer, and another for my HVAC unit. BUT, I don't have any "extra" unused 240v circuits already installed that I could use to connect an EV charger. The only way to get another 240v circuit for an EV charger would be to INSTALL one.
To install an EV charger would require installing an ADDITIONAL 240v circuit. At a cost of a couple of thousand dollars - and that is assuming that there is space in my existing breaker panel to add another 240v circuit. If not, then the price to install another sub-panel for the EV charger circuit would add another $500 or so to the total cost.
As a service manager for an electrical contracting company I did this kind of estimating for a living for 3+ years after I retired from my first career. People seem to think this stuff is simple straightforward, and easy, but I can tell you from experience that is just ain't so. Retrofitting these kinds of things to existing buildings is never simple, cheap, or easy.