Which countries would that be? Capturing CO2 from the atmosphere in order to have a source of carbon is, to this day, a technology in the prototype stage. If y

Which countries would that be? Capturing CO2 from the atmosphere in order to have a source of carbon is, to this day, a technology in the prototype stage. If you're thinking of Germany during WWII, or South Africa during apartheid, they produced synthetic liquid fuels from coal. That was technology that worked, though it was very expensive. And of course CO2 emissions were much higher than using petroleum.