Formula One racing champion Ayrton Senna, who died in a 1994 crash, is the subject of this documentary by Asif Kapadia, which is most interesting for the way its construction builds on the inherent austerity of auto racing. There’s no original footage; home movies and old video broadcasts advance the story, and their snow and blotches, blown up to 35-millimeter, are eerily fascinating. In this context the charismatic Senna—famous for his quiet demeanor and pride in his native Brazi—becomes more than a great athlete: he’s the ghost in the machine of Formula One. Much of the film’s impact comes from the nimble editing of Chris King (whose previous work includesExit Through the Gift Shop) and Gregers Sall.