Manheim s Baltimore-Washington Auto Exchange is one of more than 135 auction facilities worldwide that is maintained by Manheim Auctions. Manheim is one of the world s leading providers of used vehicle services and marketplaces to professional buyers and sellers of cars. Manheim supports sellers in getting the full value for their vehicles, and provides buyers a reliable and safe market to purchase a variety of vehicles. The Baltimore-Washington Auto Exchange holds Ford and General Motors factory suctions on Wednesdays, regular sales every Tuesday, public sales every Tuesday and in-op video auctions every Tuesday. The Baltimore-Washington Auto Exchange is located in Elkridge, Md.