For cars, sure. But there are applications where being able to carry around buckets of energy is very helpful. It's particularly important if you need to supply

For cars, sure. But there are applications where being able to carry around buckets of energy is very helpful. It's particularly important if you need to supply power to somewhere that doesn't have power lines; carrying batteries around is likely to be difficult, and they can be easily damaged. Emergency generators in a crisis area might need to be refueled before the grid can be brought back up. Flying vehicles will probably remain fueled for a long time as well. The military is another big consumer of fuels and they strongly prefer not to be limited by availability -- world wars have been influenced by that kind of thing.