Don't lie. Converting burned fuel into unburned one is not as simple as oxidation-reduction reaction at all. But also the CO2 in atmosphere is spreaded. If you

Don't lie. Converting burned fuel into unburned one is not as simple as oxidation-reduction reaction at all. But also the CO2 in atmosphere is spreaded. If you remind that we can mine the inert gasses from the atmosphere - the amount of energy is worth of consideration in that case.