e-fuels aka ehh-rather-not-fuels aka e-conomically-unviable-fuels
I'll be more than happy to be proven wrong, though.
wondering why Biomethane isn't considered as an e-fuel. Can be produced purely from renewable ressources, and the existing gasoline technology is about 90 % compatible with using Methane. In fact, you could even retrofit a gasoline car with Methane kits.