Business mogul Mark Cuban once made a spontaneous purchase of a lifetime flight pass from American Airlines during a celebratory spree, later upgrading it. What Happened: Cuban revealed in a recent podcast that he acquired the pass in the aftermath of selling his first business, MicroSolutions, for a whopping $6 million. He said during the podcast that In a celebratory mood, he reached out to American Airlines to inquire about the lifetime pass, and upon confirmation of its availability, he immediately bought it for $125,000. The pass, dubbed the AAirpass, was launched in the early 1980s, prov…