If it sounds too good to be true, it probably is.

Wikipedia says that it was invented in 1960.

I don't see why this construction method makes house "much cheaper to heat and cool". I'd say on contrary, if you have thin walls it will be much more expensive to heat & cool, unless you add good insulation. But then again, why can't you add insulation to a normal house? Sounds like bs.

But looks cool, that's true!