Would anyone out there be more or less likely to buy an ultralight if it were an amphibious submersible?

The basic concept is sound, and possible to an indeterminable level but certainly under under 40 feet (a ping pong ball is good for twenty feet, there allot tougher, more compressible yet very light weight things to make an aircraft cockpit pod out of than a ping pong ball).

If the beast could get down to 120 feet it would be safe from almost every ship in calm water. I think it could be so built, yet be light enough to qualify as an ultralight, and fly a meaningful distance.

If it could regenerate power from sea currents by water purification, hydrolysis and compressed to liquid fuel storage, it could go literally almost anywhere on earth nearly for free, if one didn't mind being stuck in several places to forage for food while the fuel cells liquid gas storage tanks were recharged.

All of this is both doable and reliably so TODAY. But the price would be relatively high.

While we still have a government, given we might well loose the next WAR, because of neo-conserfatism's erosio

"Erosion of our capacity to resist invasion for hire policy" we might as well at least build a capacity to live well enough, like Americans, if we're going to be sold on the idea of being unable to resist militarily an invitation to live like refugees.

Come on everybody, SING : WE ALL LIVE IN A YELLOW SUBMARINE, A YELLOW SUBMARINE A YELLOW SUBMARINE !

Maybe if we can get NASA to convert out para-glider into a suspended animation podded super gun launch-able solar wind drivable interplanetary exploration device, even if the Communist Chinese pay the Ron Reagan Revolutionaries enough to buy all of our land for a dollar, we can still go to what's left of Pluto ! Why would they care? That isn't even a planet anymore, cause a house divided is a planet Oi'ed