Complete the text with appropriate words.

Here is the completed text: 'Christopher Cockerel's idea was to build a vehicle that would travel just above the surface of land or water hovering on the cushion of air. His experiment started with two cans, one inside the other, and a hairdryer to blow air into them. The experiment showed that air could produce enough pressure to lift a vehicle off the ground. In 1959, in the English Channel, Christopher Cockerel tested the first hovercraft which has been used throughout the world ever since for commercial and military reasons.'