While I think these
While I think these developments are exciting and potentially game changing, the issue with solid state batteries isn't so much the ability to painstakingly make them in a lab, it's their mass producability. Or rather, the lack thereof. They're extremely difficult to manufacture at scale, whereas traditional lithium ion batteries are pretty easy to manufacture at this point. What all this means is that manufacturing them in large volumes and at prices that will allow the cars they're used in to be affordable, is going to be the real test. And it's a massive obstacle to overcome. I hope they pull it off, I really do, but solid state is likely further away than one would like to believe.