When Airbus first announced its plans to develop a self-flying taxi, it sounded like a fever dream of a sci-fi fan. Now, the aerospace giant has proven that it wasn't joking: Airbus' Vahana team have successfully flown their autonomous air taxi dubbed "Alpha One" for the first time. Sure, it only reached an altitude of 16 feet and remained in the air for 53 seconds before descending, but it did so while fully self-piloted. The team conducted another test flight the day after, and by the sound of things, that one also went well.