The obvious problem is that too make enough gas to power a gasoline car, you'll need to spend more energy than it takes to charge a Tesla (likely many times mor

The obvious problem is that too make enough gas to power a gasoline car, you'll need to spend more energy than it takes to charge a Tesla (likely many times more, I'm not sure what the energy efficiency of the conversion process is). I do have a fantasy that if we had an abundance of fusion energy (or just nuclear, perhaps), you could not only power cars, but also make oil from co2 and put it back where it came from.