I predict these will become the new megayachts of the wealthy. A single megayacht can cost $200 million, many multiples of the research costs of these vessels to date. Imagine being able to _fly_ your megayacht around the world, rather than sail like all the other billionaire plebes.
http://www.therichest.com/luxury/yachts-luxury/the-10-most-expensive-yachts-in-the-world/?view=all
http://www.therichest.com/luxury/yachts-luxury/the-10-most-expensive-yachts-in-the-world/?view=all