The Bluesmobile is a 1974 Dodge Monaco sedan that was prominently featured in the 1980 Universal Pictures film The Blues Brothers. The car is described as a decommissioned Mount Prospect police car, purchased by Elwood Blues at an auction after he had traded a previous car (a 1968 Cadillac Sixty Special) for a microphone. The Bluesmobile is equipped with a "440 Magnum" engine and squad car package, an option offered by Dodge for the Monaco in 1974. It bears an Illinois license plate reading "BDR 529", a tribute to the Black Diamond Riders motorcycle club of Toronto, Canada.[1] Dan Aykroyd, co-writer of the film, stated that he chose the 440 Dodge Monaco because he considered it to be the hottest car used by police during the 1970s.[2]
"It's got a cop motor, a 440-cubic-inch plant. It's got cop tires, cop suspension, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas".