Air date: 2012-07-08

Runtime: 60 min

Ed Byrne and Andy Parsons brave temperatures as low as 50 below to drive across Siberia's infamous Road of Bones.

Air date: 2012-07-15

Runtime: 60 min

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

Air date: 2012-07-22

Runtime: 60 min

Hugh Dennis and David Baddiel drive Ethiopia's bone shaking roads to reach Askum, home of the Ark of the Covenant.