The film opens with McQueen driving a gray Porsche around the city of Le Mans. This is the scene that "cemented the Porsche 911 as one of cinema's all-time classic cars," .
While this isn't the famous gray 911 that McQueen's character Michael Delaney drove in the opening scenes of the movie, Christie's says it was used during filming of the movie.
The Porsche was owned by two-time Le Mans winner Jo "Seppi" Siffert, who drove the race car in the movie as McQueen was forbidden from driving his character's Porsche 917 because of insurance complications. Siffert also provided many of the cars used during filming, including a Porsche 908 and a Porsche 917.
After filming wrapped in December 1970, CBS Solar Film Studios, which was McQueen's own production company, purchased the Porsche from Siffert. Since then, the car has been passed around and maintains a scan of the original certificates of ownership, including a document from Siffert to Elga Andresen, a German actress and singer with whom McQueen had an affair.
For those of you wanting an iconic piece of automotive and film history, get your checkbooks ready. According to , the car is set to go on auction starting November 4. The asking price? Between $285,955 to $400,337.