The 1st DCT to reach output was the Easidrive automatic transmission launched around the 1961 Hillman Minx mid-size auto. This was accompanied by several jap European tractors throughout the seventies (employing guide operation by way of just one clutch pedal), then the Porsche 962 C racing motor vehicle in 1985. https://donovantmboa.shoutmyblog.com/32974068/the-smart-trick-of-gearbox-auto-that-no-one-is-discussing