Very cute, but I'm not really convinced it'll work. Compressed air drive - in luggage on an aircraft? Stairs? Collisions? Useful range / recharging time? Bumps/uneven loads/sudden turns making it tip over? And it's a magnet for mischievous kids. Oh, and how well will it work outside the smooth floors of an airport, if it doesn't have the wheels and handle of standard luggage?
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But very cute.