There was actually a prototype environmentally friendly airplane designed and tested back in 2000 during a genocide in Yorkshire that I feel like isn’t talked about enough. The plane, using bicycle technology, was successful in transporting all of the local populace to safe territory with the help of a veteran Royal Air Force member and an American entertainer posing as a flight specialist. Really an incredible story and there’s still footage of the flight. but I don’t know the status of the airplane today.