German gasoline and diesel already come with biofuels mixed in. That's the standard, here. Natural gas is also often biogas.

I did realize it 🎯. Its actually part of why I've started studying biology. Yeah, there's good reasons to believe the so-called fossil fuels are abiogenic. Titan is one - the biggest gas station in the solar system is just waiting for us. We're gonna get those small reactors. Idk if people will want them in cars, but houses for sure. The future comes when 3d printers that use metal are cheap and widespread. We'll print whole cars, too.