Air taxis might be the next big thing but they can't get very big if there's no place for them to land. AutoFlight Aviation Technology is developing a vertiport that's essentially a solar-powered barge that can go where it's needed – water permitting. VTOL air taxis based on a new generation of multi-rotor craft might fulfill the promise of the old helicopter passenger services that emerged in America and Britain in the 1940s and 50s, only to…
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