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A Jaguar GR Mk1, piloted by BAC Test Pilot Tim Ferguson, used the M55 for a demonstration take-off and landing, just before the motorway opened in the Summer of 1975."
Useless trivial fact - when the US Interstate system was built in the 60's, 1 mile in every few was built dead straight to allow it to be used as an emergency landing ground for US Air Defence assets in the event of war.