The film is today still popular among race fans as it is a relatively accurate depiction of the era, with a lot of racing but very little dialogue (Indeed, there is no dialogue whatsoever until approximately 35 minutes into the film). Due to this, and partly to the American market’s general low awareness of the Le Mans 24 Hour race, it was only a moderate success at the box office there. It followed in the wake of the similar 1966 film Grand Prix.
Here is the trailer for the film. You can purchase the film in its entirety here.