https://www.eastbaytimes.com/2021/01/11/are-robot-made-printed-buildings-a-solution-to-bay-area-housing-crisis/

In a cavernous warehouse near the Oakland Coliseum, a 3D printer extrudes a secret blend of minerals and plastic polymer that’s hardened into a heavy stone-like form under ultraviolet light.

The end result of that alchemy? A move-in-ready, robot-made modular home from technology startup Mighty Buildings.