>> “Yes. I’ve seen the carnage that happens when cars run out of gas.” <<
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Childish retort. - What if it were half of the cars on the road? It would effectively stop all of them.
If the power is off for a week, pretty much every car will be unusable.
No juice for the batteries, nor fuel for the tanks.
Of course after a week, nearly every grocery store will have long since run out of its 3 day supply of food...