S1, E1: The world's biggest car programme is back with a brand new, two-part Christmas special in which Jeremy Clarkson, Richard Hammond and James May take three V8-engined sports cars on a gruelling 1600 journey through the spectacular landscapes of Patagonia. Along the way they encounter rough roads, collapsed bridges, broken bones and a cow as they press onwards against the odds in a quest to reach the southernmost city in the world.