A process called DAC (Direct Air Capture) is currently used on medium scale to do this. Other instances in which they obtain CO2 is by capturing byproduct of industrial processes or power plants. Again though, and I dont think this is sinking in, it is a closed loop system. So, once enough CO2 is captured, thats all that battery will ever need. Its not using new fuel to create more co2 it’s taking a specific amount from currently available, filling the battery ONCE then process over. You didn’t adress anything else I said.