What about when people forget to charge their cars overnight, and there's an emergency? Perhaps needing to evacuate due to a storm? It takes a few minutes to refuel and it can get you a long way.
And take something like 4 charging stations, 100 people front of you all trying to top up before evacuating, each taking full hour to charge. Now you are waiting for a day. Then 12 hours in power goes out. Now you are stuck with half of them.
