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Very interesting and creative design, though in my simple way I just think when you might need it most in a grid down situation nothing is going to work without power. Even home generators to power it are only as good as you have fuel to power them. The other thing is that sooner or later you must leave the house. Nobody has supplies enough to go on forever holed up inside. If you are living where you feel the need for such measures, then you are probably living in the wrong place. A pretty neat place nonetheless.