Countdown to Transformers begins
When Michael Bay, cinema’s reigning champion of vehicular carnage, thinks your idea for an explosive, special-effects-laden blockbuster is lame, you’ve got problems. A few years ago Mr. Bay, the director of “Armageddon,” “The Rock” and “Bad Boys,” was in his editing room when Steven Spielberg called to offer him a new project: an action movie about giant robots that metamorphose into cars, trucks and planes. As Mr. Bay recalled in a recent interview, “I’m like, ‘O.K., great, great, great.’ And…