The initial DCT to succeed in manufacturing was the Easidrive automatic transmission released about the 1961 Hillman Minx mid-size auto. This was accompanied by different jap European tractors through the seventies (employing guide Procedure by way of just one clutch pedal), then the Porsche 962 C racing vehicle in 1985. https://gearboxauto29627.onesmablog.com/a-review-of-gearbox-auto-74768319