They say they have them and will start producing in 2022. Flexible ceramic? Isn’t that clay?

https://www.theverge.com/2020/12/8/22158573/quantumscape-solid-state-battery-ev-range-charge-vw?fbclid=IwAR2UPNdxpVwg31jIWG6LpwruDh2wLCoMYAklNBB8wvc50horX5L6epse1IM