 HOFFMAN ESTATES, Ill.--BUSINESS WIRE--CDK Global, Inc. Nasdaq: CDK, a leading retail automotive technology company, today completed the acquisition of Palo Alto, Calif.-based Roadster, Inc. Roadster, a digital sales platform that modernizes the way consumers buy vehicles and the process in which dealers sell them. The integration of Roadster assets and capabilities positions CDK to bring the first fully integrated, end-to-end retail solution to the automotive market and deliver on the p 