IMO hybrid makes sense, especially combined with a supercap that can give you 2 minutes of V8 power for a car that normally is a straight six. The lithium you can keep thx. It's never gonna be as stable as carbon, or as resistant run-away self-oxidation. idgaf about that it's 5x as heavy it's 10x as durable and safe.
Discussion
💯 hybrid Atkinson cycle diesel on renewable hydrocarbons with SCR is as good as it gets IMO. Super capacitors are actually pretty light weight too comparably.