Solid state has serious issues with power density and IR heating, the next battery chemistry for cars isn't going to be solid state Li-ion. Magnesium-Air or Zi

Solid state has serious issues with power density and IR heating, the next battery chemistry for cars isn't going to be solid state Li-ion. Magnesium-Air or Zinc-Air are interesting for automotive applications, since they have high specific capacity without sacrificing too much on power. Li-Sulfur also has potential, but it currently suffers from the same problems as Solid State Li.