A quote from the article you linked in the OP" "Empty space itself has a negative energy density. The big question is if we could mine it and shape it, we would basically have a warp drive there and then, but we just don't know if that's possible." I tried to verify just part of that statement from the Wikipedia article on vacuum energy. In part it said: "the exact nature of the particles (or fields) that generate vacuum energy, with a density such as that required by inflation theory, remains a mystery." So, no matter which way you cut it, the article that was linked in the OP, like the corresponding Wikipedia equivalent, said nothing about nothing. Why couldn't either of you (paddoboy or brucep) just say something along those lines? Did you even read / understand it? I know you are both much better than you have evidenced here. You'd pretty much have to be.