Granted, it seems... impractical. Over the course of one night, St. Nick has to stop by the home of every Christian child in the world. Of which there are a lot - an indeterminately large number of kids waiting for their gifts.
I decided to figure out how many, how big a task Mr. Claus faces as he races west across the face of the globe, staying ahead of the sun. And I did. Or, anyway, I came up with a pretty solid estimate.