Treadigraph, the ultimate dummy ruse was featured in the BBC's Goon Show. A full sized cardboard replica of the British Isles was to be constructed and floated off of Southern England prior to German invasion. Once their troops were safely onboard it was to be towed into mid Atlantic and sunk. It was only one of many high tech solutions featured, such as the Great African trans-Continental Aeroplane Canal which allowed for the ditching of aircraft in distress. It was hard to outdo reality though, given real wartime projects for mid-Atlantic aircraft carriers constructed not of wood but of ice.