The Parisian street scenes were filmed in Sonoma, CA using cars provided by members of the Arcane Auto Society car club. The automobile's owners were used as extras in the street scenes that showed their cars.
Bill Pullman lost his sense of smell after a head injury and two-day coma.
Montgomery Paulsen, who plays an uncredited role as the wine store patron, is a professional winemaker by trade.
In-joke: Maurice (Dennis Farina) adds a wry reference to labor issues with film production during Scene 24 (minute 91:54) as guests and judges arrive. He claps his hands and in bad French urges a chauffeur to get moving and park the cars, followed by "Let's go! You're not a Teamster, ya know!"