 ShortSummary = In a two-part special, as a tribute to the 60th anniversary of the small-block V8 engine, the boys head to South America for a road trip across Argentina and Chile that will cover 1730 miles , unaware of the trouble they will face at their final destination of Ushuaia in Tierra del Fuego, and the fate that faces the V8-powered cars they take with them for the journey - Clarkson opts for a Porsche 928 GT because of how another 928 helped him to see his ill father before he died, Hammond brings along a 1971 Ford Mustang Mach 1 from the last year of the "great American V8", and May wonders if he took a risk with his choice of a Lotus Esprit V8, while all three later learn they have a back-up in the form of a Citroën 2CV.