Fun stuff! Thanks for the linky.
That's awesome! I'm surprised the FAA hasn't gone after them yet though.
Makes you wonder just how high the balloon could go, and how far it would travel, if didn't, or couldn't, burst?
“When I was a boy of fourteen, my father was so ignorant I could hardly stand to have the old man around. But when I got to be twenty-one, I was astonished by how much he'd learned in seven years.” Mark Twain (apocryphal)