The 1st DCT to reach manufacturing was the Easidrive automatic transmission introduced to the 1961 Hillman Minx mid-dimensions automobile. This was followed by several japanese European tractors through the seventies (making use of manual operation by using just one clutch pedal), then the Porsche 962 C racing car or truck https://gearbox-auto87418.alltdesign.com/gearbox-auto-things-to-know-before-you-buy-53307748