Three teams of veteran and rookie North American truckers take on South America's Andes Mountains.

Dave and Lisa deal with their malfunctioning truck; Hugh and Rick battle the language barrier.

Hugh and Lisa are forced to continue on without spotters; Tim and Tino navigate treacherous cliffs.

Lisa gets a look at her new partner; Hugh tries not to play demolition derby at a market.

Tim and Tino challenge Hugh to a race down the Death Road; Lisa settles in with new partner G.W.

Lisa and G.W. take a load of live animals over salt flat; Tim and Tino take on the death road.

Bolivian Cholita wrestling; Lisa relegates G.W. to the spotter's role; Tino and Tim climb higher.

Lisa finally hands the reins over to G.W. Boles; Hugh Rowland has a road race against the rookies.

Lisa and G.W. take on the same road that almost sent G.W. over the edge; Hugh gets his truck back.

Hugh takes on an old donkey trail with some dynamite; Lisa and G.W. drive into Dead Nun Canyon.

The truckers tackle the Peruvian Andes; Dead Nun Canyon; Tim and Tino challenge Hugh.

Tino and Tim haul barrels of gasoline over roads wired with dynamite; Hugh transports frozen fish.

Lisa and G.W. haul a load of bulls; Hugh hauls a truck full of fireworks; Tim tests his speed.