Everybody knows that circuit racing was banned in Switzerland following the 1955 Le Mans accident.
Well, in Motor Racing magazine, August 1965 there is a short article about the Lignières circuit on the county of Neuchatel. It was built in 1960 for the "improvement of the technique of safe driving and for psycho-dynamic studies". It was initially 850 metres long but extended in 1964 to 1.4 kilometres. In due course, club races were held, including one in which John Aley competed. The track width was only 8 metres so only 10 cars were allowed to compete at a time, but Jo Siffert was known to practice there.
the circuit still exists: http://www.tcs.ch/fr...de-conduite.php