The main DCT to succeed in production was the Easidrive automatic transmission introduced around the 1961 Hillman Minx mid-sizing car. This was followed by various eastern European tractors through the 1970s (using manual Procedure by using one clutch pedal), then the Porsche 962 C racing car or truck in 1985. https://gearboxauto17305.bloguerosa.com/33123028/gearbox-auto-can-be-fun-for-anyone