PR Coca-Cola transforms ‘Happiness Machine’ into a truck Hoping viral lightning will strike twice, Coke adds mobility and international venues; Facebook fans could help determine where it shows up next. By Matt WilsonFeb. 25, 2011 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.