If you have netflix streaming, you must watch the Top Gear Bolivia special, series 14 episode 6. It's brilliant.
Hammond is truly petrified of insects, James reveals that he has a phobia of heights, and Jeremy says his phobia is of manual labor. You can imagine how things go for Hamster in the jungle, and for Capt. Slow while driving along the "El Camino de la Muerte" or Death Road (James goes after Clarkson with a machete.)
Also, in the end, the Range Rover wins the challenge, showing that the most unreliable car in the world is the most reliable car... in the world.