As Kevin Conley explains,
The director, who had no permits to film or to stop traffic, hooked a camera to the front bumper of a Mercedes-Benz (in the only bit of film trickery, the sound of the motor was played by a five-speed Ferrari) and filmed the entire movie in a single cinema-verité take: He drove through the streets of Paris at five in the morning, through red lights, around the Arc de Triomphe, down the Champs-Élysées, against one-way traffic, over sidewalks, at speeds up to 140 miles per hour. The film ends after nine terrifying minutes when the driver parks the car in Montmartre and a blonde comes up the stairs toward Sacre Coeur. (It was a date.) After the first showing, the director was arrested for endangering public safety.
I suspect if you're familiar with Paris, this is even more terrifying a spectacle.