The initial DCT to achieve generation was the Easidrive automatic transmission introduced on the 1961 Hillman Minx mid-dimensions motor vehicle. This was accompanied by various jap European tractors in the seventies (making use of manual operation by means of just one clutch pedal), then the Porsche 962 C racing motor https://gearboxauto32952.tribunablog.com/the-greatest-guide-to-gearbox-auto-48492183