Since it was unveiled in 2018, the Cargo Air Vehicle CAV has evolved from an initial concept to a prototype air vehicle. A team of Boeing researchers and engineers refined the design through rigorous indoor testing, flight simulations and lab research. The vehicle now features six dual-rotor systems and 12 propellers. It measures 17.5 feet long (5.33 meters), 20 feet wide (6.1 meters) and 5 feet tall (1.52 meters), and weighs 1,100 pounds (498.95 kilograms).