> Any situation where there is no electricity supply also means you wouldn't be able to pump gas. You do realize gas stations run on electricity right?

If you are concerned about emergency readiness, keeping a reserve fuel level in a typical gas (incl. hybrid) cars tank that provides more range than even the overly generous EPA-listed range of any pure electric short of a Tesla Model S Long Range Plus is eminently practical. So, if there is a recharging/fueling outage and need to evacuate, gas wins.