The main DCT to reach creation was the Easidrive automatic transmission released around the 1961 Hillman Minx mid-size auto. This was accompanied by various jap European tractors throughout the nineteen seventies (using handbook Procedure by means of only one clutch pedal), then the Porsche 962 C racing auto in 1985. https://claytonbbzvt.madmouseblog.com/14274554/the-ultimate-guide-to-gearbox-auto