After talking with his manager, the car dealer says he can take $100 off the undercoating. This is what William H. Macy's car dealership character offered the distraught couple in "Fargo".
With only 5 speaking parts (Doug, Carrie, Arthur, Richie, and the Car Salesman), this episode has the smallest cast of any King of Queens episode.
Doug and Carrie browse a car dealership called Sahakian Motors, presumably after the show's producer Annette Sahakian Davis.
The car is actually a 1970 Mini 850 Mk III. "Douchenberger" cars do not exist.