> The advantage of hydrocarbon fuel is that it is basically instantly fillable (no charging), doesn't decrease in capacity (or minimally I suppose), and energy

> The advantage of hydrocarbon fuel is that it is basically instantly fillable (no charging), doesn't decrease in capacity (or minimally I suppose), and energy density. That first property can be mimicked by batteries without too much trouble. Just standardize them and make them swappable at the fill-up station, like propane tanks. There are financing complications with this (who owns the batteries, etc.), but it's do-able and it's already been tested by at least one now-failed start-up.