Back when the company I work for was just a fledgling startup (as opposed to our current status of being a fledgling commercial entity, 14 years down the road), we shared office and lab space with a former Stanford physics prof who mostly works on Zero Point theory and applications. As I understand it, Albert Einstein predicted the Zero Point Field, and that it has been proven to exist for many years. (The Casimir effect, in which very short atomic-level "energy wavelengths" are excluded from the space between two very closely-spaced metal plates, thus causing a force which collapses the plates into each other, is an example.)
At any rate, this guy was committed to making ZPE "flight" possible. Obviously, he hasn't succeeded, but he had a long history of black project work with the government back in the Cold War, including leading the DoD lab at Stanford which explored, among other things, claims of remote viewing and mind/physical interactions. He is definitely way out there.