Forget about nuclear missiles, the decisive weapon of the twentieth century is the car bomb. We now know you can defeat a Superpower, start a civil war or just blow up your own government with a trunk-load of homemade explosives and a battered old car. From the Middle East to Oklahoma, Afghanistan and most recently New York's Times Square, the car bomb has shaped human conflict. Even today it remains the number one terrorist threat across the world. In this startling film, ex-CIA agent Robert Baer, whose life was depicted by George Clooney in the Oscar-winning movie `Syriana,` uncovers the history of this extraordinary weapon for the first time.