Which fossil fuel are we burning to power the EVs? We don’t really need to worry about overseas oil the way things are, and we aren’t running out of oil anytime soon. Iran has a vested interest in selling their oil, they won’t leave the Strait closed forever.
We have solar panels and a backup battery, our monthly PG&E bill is zero. Even in winter there's enough sun to keep the car and battery charged. And while it's good to be on the grid "just in case" - we've never noticed a power outage.
It's not EV's, it's solar panels and wind. How you use the energy created becomes a thing, and a huge piece of our energy usage is transportation, so coupling the panels/wind with EVs is the big winner.
Land use is also important. If I had an hour commute every day, I'd be draining the battery nightly to recharge the car, to net zero we'd need bigger batteries and more panels. But since we mostly walk to places, work was close/remote, we never exceeded our production. But for lower paid workers around here, housing is prohibitive and they end up commuting.