Automotive retailer AutoNation, Inc. (AN: Quote) said Tuesday that Chief Financial Officer Mike Short will leave the company effective January 7.<br /><br />Vice President and Treasurer Cheryl Scully has been appointed interim Chief Financial Officer while the company conducts a search for a new Chief Financial Officer.<br /><br />AutoNation said it has retained Heidrick & Struggles to conduct a national search for a new Chief Financial Officer.  The company will consider internal and external candidates for the role. 