There is one use case for an EV: SHTF. If fuel supplies were to stop a solar system could charge an EV. Of course, not going places might be less of an incentive to own a car, but there will always be a need for transportation.
If SHTF you will want a lighter car—so the horses can pull it.
:-)
Most of the EVs call home. If the SdHTF, communications would likely suffer and they wouldn't work after the missed check-ins.
This is one of the main reasons we have an EV, after having solar for a year, then buying an EV when it was time to replace my wife's car anyway, and adding onto the solar. In many ways I like my gas pickup more than the EV. But the bottom line is I can't make my own gasoline like I can make my own power. Unfortunately, solar is feasible only in certain situations (i.e. live in deep south where we get lots of sun, have a field or roof that's not shaded, have a detached garage to put your battery storage, etc.).
The other reason we have an EV is to give our long trip travel options on energy sources. We have one EV car and one gas pickup. If the Dims make gas hard to come by or too expensive, we'll take the EV. If the Dims make the grid unreliable or too expensive for charging, we'll take the gas pickup. Thus, the Dims have to limit both power and gas to limit our long trips. If the Dims limit both power and gas then we can still do local traveling in the EV (especially during the non-winter months).