The building in which the robbery takes place was filmed in the Marquette Building in downtown Chicago, now a National Historic Landmark.
The police car is a 1952 Ford Mainline. This was Ford's base model, below the Customline and the Crestline.
The Silver Frolics night club is the center of much activity in this film and was a real Chicago attraction. The location was at 400 N. Wabash.