Soda giants Coca Cola, Pepsico, and Cadbury Schweppes bowed to immense pressure from activists, the medical community, and the government on May 3 and agreed to pull most of their soft drinks out of elementary, middle, and high schools around the country... Up next? The snack companies that fill vending machines with candy and chips, and the fast-food companies that supply school cafeterias with food. Companies that could be affected by that initiative are Domino's Pizza, McDonald's, Mars, and the Frito-Lay division of Pepsico.