What's "very far away?" Looks like BETA Technologies has a real airplane, ALIA, that'll potentially be certified next year. They're currently building a manufacturing facility to mass produce it.

I think what's very far away is autonomous flight. But IMO farther is autonomous automobiles, because as both pilot and driver, aviation has rules, standards, predictability, integration of a wide assortment of vehicles of flight, training, and thus a far better prepared environment for autonomous. The automobile environment is so haphazard humans make way more mistakes driving than flying.