I like this invention. I saw it first on the Youtube video where it is shown as a mobile hospital for use in disaster areas.
The idea is that concrete impregnated fiber is wet, then inflated with a leaf-blower and the structure is allowed to set. This leaves you with a large structure that can be made sterile for use as a hospital.
When I visited the website it showed the military uses of the same technology. Guess where it will make more money?