Not quite, you missed the crucial point (Deliberately, given our recent dialog?) it's energy polarity that matters, source is dictated by that, nothing else.

Get that right, and all the harm stops. All of it, the temperature increase, the pollution, even the genocide, the poverty, the dying - all the bad stuff stops, and starts to reverese, when we just make the switch, from mathematically negative, to mathematically positive energy.

https://eric-bott.medium.com/the-energy-polarity-multiplier-framework-fb4215b55862

and there are bigger things to worry about than cars, this is why lithium has gone about as far as it can go.

https://eric-bott.medium.com/yes-we-will-be-flying-in-hydrogen-powered-passenger-planes-93779606fff7