It's the middle of the night in the sleepy French town of Lévignac, in the countryside just outside of Toulouse. There are people lined up along the town's main road, waiting for a parade to begin. But there are no marching bands or decorated floats at this 1 a.m. event. Instead, a convoy of six trucks appears, each pulling an enormous trailer carrying a massive component of the world's largest passenger airliner, the Airbus A380.