ATLANTA--(BUSINESS WIRE)--Cox Automotive, Inc. (“Cox Automotive”) announced that it has voluntarily withdrawn its filing under the Hart-Scott-Rodino Antitrust Improvements Act, as amended (“HSR Act”) in order to provide the U.S. Department of Justice with additional time to review the proposed acquisition of Dealertrack Technologies, Inc. (“Dealertrack”). As previously announced on June 15, 2015, Cox Automotive and Dealertrack have signed a definitive merger agreement under which Cox Automotive