TIN news: Air-Elf aircraft concept is to solve road congestion. The core of the concept is a new type of wing, “Air Caterpillar”. It can be transformed in order to meet the needs of flexibility and speed of the aircraft. Air-Elf aircraft not only can take off and land vertically, but also is able to perform high-speed cruising. In addition, Air-Elf is equipped with smooth aerodynamic appearance, clean and efficient hydrogen energy power system, solid frame, to facilitate safe and comfortable cockpit and baggage compartment.