Preview:Judd Apatow is directing ‘Cola Wars’.It’ll follow the battle between Pepsi and Coke for soda superiority.Steven Spielberg is aboard as a producer.Stories of corporate triumph aren’t necessarily what you might think of as a popular genre, but if you can find an interesting hook for the story, they’ll work –– witness last year’s Ben Affleck effort ‘Air,’ which chronicled Nike’s attempts to win over a young Michael Jordan and the struggle to see off competition from other sneaker manufacturers.