Abstract: Provided are, among other things, systems, methods and techniques for facilitating inventory exchanges among automobile dealerships. One representative embodiment involves a process of: (a) receiving postings regarding available used cars from automobile dealerships; (b) upon request, displaying the available used car postings to a first one of the automobile dealerships; (c) receiving, from the first one of the automobile dealerships, a purchase offer for an automobile corresponding to a selected one of the displayed used car postings that was posted by a second one of the automobile dealerships; and (d) based on that purchase offer, establishing a requirement that a purchase be made from the available used cars posted by the first one of the automobile dealerships.