Look, in the sky - it's a bird, it's a plane, no it's... it's actually Santa's sleigh, sleighing its way around the world. But how did it get there? Many people have been busy hand-making mince pies ...

For eons, Santa Claus has been spreading gifts and joy to kids all over the world, in a single night, by relying exclusively on a very low-tech piece of engineering: a wooden sleigh powered by eight ...