The main DCT to succeed in production was the Easidrive automatic transmission released over the 1961 Hillman Minx mid-measurement car. This was followed by different jap European tractors from the seventies (working with manual Procedure by using just one clutch pedal), then the Porsche 962 C racing vehicle in 1985. https://cristianclnom.ampedpages.com/gearbox-auto-things-to-know-before-you-buy-61094259