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Runways at international airports are multi-use. The Goodyear needs that much space just to sit. Nothing else can come close. And good luck taking off or landing in any kind of wind. Ocean liners can (A) haul a bunch of people (B) run on bunker oil. Blimps don't run on bunker oil, they run on avgas. As such, "luxury" is the only kind you'll get. And no, your choices are hydrogen, helium and hot air. Hot air is its own problem.