Parade-watchers yesterday may have noticed a fierce-looking Cadillac hulking behind the new president and first lady. Meet "The Beast," the new presidential limo. Not much is known about the car, but observers say it is likely that it includes "bullet proof glass, an armored body, a separate oxygen supply, and a completely sealed interior to protect against a chemical attack." The assistant director for the Office of Protective Operations called it "the most technologically advanced protection vehicle in the world." The White House has not returned our calls about co-branding.