Sounds like the prototypical "build something that doesn't scale". I have no idea how capital intensive this is (other than...a lot) but I too think building a Boom-0 and flying it NYC-London as often as possible is the best first step. Just make sure to have the first couple of flights filled with investor types ;) You really want some innovators that spread the word. Some lawyer telling their friends how he was able to close a deal because of that flight, some top executive peddling the "home to tuck in the kids" story at the next business meeting etc.