For the last leg of their Route 66 odyssey, the bikers are going west to California. First, they make a small detour to Las Vegas. Si and Dave have been invited by one of the youngest chefs in the country to learn how to make the best mashed potato in the world. Inspired by their Las Vegas extravaganza they cook the biggest, poshest lobster and prawn cocktail ever seen. Back on Route 66, they visit the town of Goffs, California, the epicentre of the Wild West, where they learn about the homestead scheme and discover the Mojave Desert. In an authentic rustic saloon, Si unknowingly eats a very modern burger - a vegan burger served up by Dave. After riding into Los Angeles, the bikers ditch their bikes to try something unique – cooking with marijuana. And later discover the best tacos they have ever eaten, then finish up by cooking by Santa Monica beach. Finally, they ride to the Santa Monica pier to park their bikes and walk to the official end of route 66.