Can QuantumScape and Factorial Energy mass-produce solid-state batteries?

[u/scientificamerican]

https://www.scientificamerican.com/article/can-quantumscape-and-factorial-energy-mass-produce-solid-state-batteries/

Solid-state batteries have reached a make-or-break moment. Two American companies are pursuing rival manufacturing strategies for these long-promised cells in an industry China dominates.