The Automotive Directory Featured Sites Used Cars Used car listings and dealerships across the country, as well as informative articles for the used car buyer and seller. Listings Citroen Auto Parts - Chicago-based dealer of replacement Citroen parts. Citroën Concours of America - service, parts, and restoration company devoted exclusively to Citroën cars. Also hosts the Citroën Car Club of America. Gare Du Nord - offers warrantied used original parts for the Citroën DS.