MILLAU, France (AP) -- Piercing the sky above the verdant hills of southern France, a stunningly modern roadway bridge hailed as the tallest in the world was officially inaugurated Tuesday. Celebrated as a work of art and an object of French national pride, the Millau bridge will enable motorists to take a drive through the sky -- 270 meters (891 feet) above the Tarn valley for a 2.5 kilometer (1.6 mile) stretch through France's Massif Central mountains. Designed by British architect Norman Foster, the steel-and-concrete bridge with its streamlined diagonal suspension cables rests on seven pillars -- the tallest measuring...