yo-yo sale
n.— «The dealership was cruising—and potentially crossing—a line drawn by the state’s bushing law. Bushing, believed to be a shortened version of bushwhacking, is when dealers attempt to convince consumers they must agree to new terms of an old deal. In other states, the practice is called a yo-yo sale or spot delivery.» —“Bushing law: When is the car you’re buying really yours?” by Laura Gunderson Oregonian (Portland, Oregon) Oct. 20, 2008. (source: Double-Tongued Dictionary)