I can be proven wrong, but I suspect that solid state won't be price viable for a long time. LFP and sodium ion chemistries are improving to an economic sweet

I can be proven wrong, but I suspect that solid state won't be price viable for a long time. LFP and sodium ion chemistries are improving to an economic sweet spot that solid state may not be able to compete in without a lot of scaling and risk. LFP at 230-260 wh/kg will probably be able to handle all the Tesla ranges of 300-400 mile packs, especially given their reduced need for heat management so their cell-to-pack densities are higher. Sodium Ion at 150-200 wh/kg will be even cheaper than LFP, and can probably handle the 200-300 mile range EV, which will probably handle 90% of consumer transport in high density cities in China, India, Europe, Latin America, and other places. Solid State will then be competing for high-end applications (well, there is still semis/heavy transport, but LFP may be good enough for that too). I don't think it is good enough for air transport. Li-S may beat it out economically as well. But options are always good, and there will be lots of room for different flavors of batteries.