The Hybrid Air Vehicles HAV 304 Airlander 10 hybrid airship is seen in the air over a road on its maiden flight from Cardington Airfield near Bedford, north of London, on August 17, 2016. The Hybrid Air Vehicles 92-metre long, 43.5-metre wide Airlander 10, billed as the world's longest aircraft, lifted off for the first time from an airfield north of London. The Airlander 10 has a large helium-filled fabric hull and is propelled by four turbocharged diesel engines. According to the company it can stay airborne for up to five days at a time if manned, and for over 2 weeks unmanned with a cruising speed of just under 150 km per hour and a payload capacity of up to 10,000 kg. / AFP PHOTO / JUSTIN TALLIS