Christmas the holiday that is connected to science fiction most tightly!
Of course, how else do you imagine a single fat man, of advanced age at that, in a Coca Cola sponsored outfit would be able to travel the world in twentyfour hours and distribute millions of presents to millions of households (lucky not the whole world believes in Christmas, else it would be billions)? Those are uncountable tons, whole freightship loads, truck columns, freight trains full with presents!
It is well known Santa operates from a most secret base at the north pole a contradiction in itself, by the way. (Well known, but secret ho ho ho!)