> Especially since a gas station half-way to safety can fill up hundreds of cars faster than a dozen EVs can charge.

Logistics. A petrol station can fill up any single isolated car or truck really fast, but when the local supply is gone, it can only be returned via a delivery truck (unless I'm very wrong and they have pipes direct to refineries?)

An electric charger can recharge one car battery much slower than a tank can be refilled, but the grid can be approximated as "not running out" over that kind of timescale.

I'm not sure which would be better for mass evacuations in practice, especially given traffic jams are where EVs excel.