The Polar Express is about faith, and the power of imagination to sustain faith. It's also about the desire to reside in a world where magic can happen, the kind of world we all believed in as children, but one that disappears as we grow older.
“Because you know how you say I've got to really get down and really do some training and then of course, you never do or you do it for a couple of weeks and slough it back off again but I'm being forced to do something that I really want to do and I loved it.”