On a sign: Danger 129° grade. Use low gear. Sarah He said Santa would have to fly faster than the speed of light to get to everyone's house in one night. And to hold everyone's presents his sled would have to be bigger than an ocean liner. Father Your brother said that? He was just kidding you. He knows there's a Santa. Sarah He said he wasn't sure. He wasn't sure if Santa was for real. Conductor Well? You coming? Hero Boy Where? Conductor Why, to the North Pole, of course! This is the Polar Express!