Finding the right materials has been really hard, but the next obstacle is scaling up the production. As long as we’re talking about small scale production, these batteries are going to be really expensive and only suitable for very few products.
VW is suggesting that they have solved both of these problems, which obviously makes me a bit skeptical. However, I don’t think it’s impossible, but I’m saying it’s really hard. I would have expected to see some luxury products use SSBs first before seeing them in main stream brands.