Domino's Japan announced it is currently testing out the possibility of using riderless reindeer to deliver pizzas in the snowy north of the country amid expectations of a particularly harsh winter. The company released pictures showing how the pizza warmers mounted to the reindeer's backs would work, as well as photos of reindeer training to be pizza-delivery deer on the grounds of a driving school in the icy city of Ishikari, Hokkaido.