://:0/assets/autos_db/thumbnails/9_Days_of_Summer_WR_Final_jpg_677x1000_q100.jpg9 Days in Summer is a 48-minute promotional documentary film made by Ford in 1967. It tells the story of the development of the Ford-funded Cosworth DFV and Lotus 49, the title coming from the nine Formula One races the car took part in 1967, which are also extensively featured in the film.