A Life of Speed: The Juan Manuel Fangio Story is a 2020 documentary film directed by Francisco Macri and starring Fernando Alonso, Jackie Stewart and Mika Häkkinen. The premise revolves around Juan Manuel Fangio in the 1950s, and how he won five championships driving for four different carmakers in the F1 circuit.
Maybe not the best documentary out there, but presents the most important moments in the life of Fangio, and adds up with interviews from modern World Champions, like Fernando Alonso, Nico Rosberg, as well as former Champions, like Mika Hakkinen, Jean Alesi, Jackie Stewart, but also features testimonies of persons that knew and raced Fangio.
All in all, a strong documentary about a legend. Five popcorns.