> Na is 30x the volatility of Li.

Elemental sodium is reactive. Ionic sodium is not, lest you blow up your dinner. Furthermore, the lithium part of a Li-ion battery isn't the flammable part, the electrolyte is.

> If you want to replace FF there is exactly one solution, that's nuclear.

You're proposing to... replace vehicular internal combustion engines with nuclear reactors?

> Stop acting like you care about this issue. You have never cared enough to learn about it, so until you do, stop spreading misinformation about how physics works.

It's wild for you, in particular, to take such a weirdly aggressive stance here. Zero basis in reality, just virtue signaling.