Autoflight, an electric vertical takeoff and landing, or eVTOL, aircraft developer, achieved the world's first formation flight of three autonomous eVTOL aircraft on Thursday in Shanghai. Autoflight, an electric vertical takeoff and landing, or eVTOL, aircraft developer, achieved the world's first formation flight of three autonomous eVTOL aircraft on July 26 in Shanghai. Three of the company's Prosperity I aircraft …