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 How New Coke Went From Market-Changer to Company's Humbling Biggest Blunder Marcio Moreira, Part of the Group of McCann Execs That Worked on Product's Launch, Reflects on Its Unexpected Outcome By Marcio Moreira, Published on May 02, 2011 1 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. Become a Member Already a member? Log in.