"This one is more masculine. More muscular." That's how George Land, the sales director of Hybrid Air Vehicles (HAV) , described the latest version of the aircraft that may well revolutionise the way that we travel. When the Airlander 10 first flew in 2010, it quickly earned the nickname ' the flying bum ' due to its intriguing curviness and the way it looks when viewed from behind. Mr Land – whose firm bought the design when the project was scrapped by the US military following the end of the