You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Ewanick Puts Mark on Cadillac -- by Preparing to Move Account GM Marketing Chief Readies Shift of $270 Million Business From BBH; New Agency Home Unconfirmed By Rich Thomaselli, Published on June 23, 2010 22 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Register Now Already a member? Log in.