where they can train to become one of Santa's elves at the new Elf Training Academy. You can also drop off a letter to Lego Santa or bust some jolly good moves at the Holly Hype Dance Party.

In order to keep the bricky appearance of the train engine intact, [Robert] hollowed out a few cheap imitation LEGO bricks to house the electronics. He also cut out slots for JST connectors ...

While the train was on its magical journey, Santa and his elves walked down the carriages, handing out presents that included teddies, chocolates, toys, and even Lego, all donated by the rail ...