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You can literally camp in an EV for days with a comfy temp inside. And if you're stuck in traffic for _days_, you've got bigger issues or you live in an area where you should never drive anywhere without a Get Home Bag anyway.
I live in Scandinavia where the temps get regularly below -20C and an EV is the best option to have by far. No car ever has been as warm as fast during winters.
It's not exactly rocket science to bring in a generator on site to charge the EVs enough to get them to the nearest charger.
I could also invent a scenario out of my ass where the local gas station has run out of fuel because of a bank run style situation, but the electric grid still works just fine. How would gasoline powered cars work then?
This happens regularly in the US for example.
Those people really need a GHB and a propane cooker in their car at all times.