I’ll throw one other answer in here that’s a little indirect: inertia. Not physics but societal inertia: we’ve designed roadways and vehicles around combustion vehicles which have historically weighed thousands of pounds. While it’s possible and even easy to design a smart car-style vehicle to travel 300 miles between charges, their popularity has suffered because of the dangers of sharing the road with semi trucks and other large vehicles. This is especially true in the US.
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