Hugh Bonneville and Jessica Hynes pair up for a road trip through the former Soviet state of Georgia. Jessica's spirit of adventure causes Hugh a few anxious moments. Show more

Good friends and fellow comedians Ed Byrne and Andy Parsons brave temperatures as low as minus 50 to drive across Siberia's infamous Road of Bones. Show more

Adventurer Ben Fogle and comedian Hugh Dennis drive a historic route from the Peruvian Andes to the depths of the Amazon. They hope to find the lost city of Constitucion. Show more

Angus Deayton and Mariella Frostrup drive through Madagascar during the tail end of rainy season. This route is mired with mud and dotted with perilous river crossings. Show more

Phill Jupitus and Marcus Brigstocke head to Bolivia for a high-altitude road trip taking in the so-called Road of Death before findng themselves deep in bandit country. Show more

Comedian Sue Perkins and adventurer Charley Boorman travel across Alaska to the notorious Dalton Highway, where avalanche units operate throughout the year. Show more

Comedians Rhod Gilbert and Greg Davies attempt to drive through the mountainous, landlocked nation of Nepal, starting from the chaotic border with India. Show more

Sue Perkins and Liza Tarbuck drive the legendary Ho Chi Minh Trail, a network of dangerous roads hacked through the mountains and jungles of Laos and Vietnam. Show more

Hugh Dennis and David Baddiel drive over 2,000km of Ethiopia's bone-shaking roads in a quest to reach Aksum, known as the home of the Ark of the Covenant. Show more