The 1st DCT to succeed in production was the Easidrive automatic transmission launched to the 1961 Hillman Minx mid-size auto. This was accompanied by various jap European tractors through the 1970s (making use of handbook Procedure through just one clutch pedal), then the Porsche 962 C racing car in 1985. https://kylermljgb.blogrenanda.com/40073011/gearbox-auto-an-overview