The Porsche 917 is considered one of the most iconic racing cars of all time and gave Porsche their first 24 Hours of Le Mans win, while open-top versions of it dominated Can-Am racing. After dominating Group 4, 5, and 6 racing in the 1970s with the 911-based 934 and 935 and the prototype 936, Porsche moved on to dominate Group C and IMSA GTP in the 1980s with the Porsche 956/962C, one of the most prolific and successful sports prototype racers ever produced.