I saw this and similar projects a long time ago. The problems include: the weird shape of living in a tube, not being at ground level, and hazmat/toxic aviation materials throughout. Seems more like hipster "recycling" impractical bragging rights that anything else, and I'm all for unusual dwellings made out of reclaimed (almost) whatever, concrete culverts, or underground sprayed concrete+fiberglass "eggs," but some things need proper recycling. Living in a nuclear reactor containment vessel seems like the next thing, but why?