Burning Fossil Fuels does Molecular Nuclear Fusion
But if we Titanium plate the engine or boiler plate , we double R. So the easiest way is to ti plate the inside of the engine. Beryllium would also work.
Sp the same engine power, for half the Fossil Fuels burnt. So a 50% reduction is Fossil Fuels – but photosynthesis already converts extra CO2, back in to active biology – sucking it out of the air.