Driven to Extremes

Hollywood celebrity, Tom Hardy, and former Finnish Formula One driver, Mika Salo, drive from Yakutsk, the coldest city on Earth, to Oymyakon, where temperatures have been recorded at minus 70 degrees Celsius. The only way to travel by car is along the 1,260-mile Kolyma Highway, known as the Road of Bones. Built by Gulag prisoners from the Joseph Vissarionovich Stalin, this frost-covered track is only passable in winter when the rivers are frozen over. Drivers need follow only one rule: do not turn off your engine as it might never start again.

Floods, humidity and dangerous wildlife test former F1 driver Mika Salo and actor Adrien Brody in their expedition into the Malaysian rainforest. Here, travel is hindered by disused logging trails, scattered with fallen trees and mud holes and criss-crossed by swollen rivers. And because the team set out at the height of the monsoon, very often they find those trails completely waterlogged.It's not just fallen trees and flooded rivers that pose a threat to the safety of the crew, though. The jungle is home to spectacular wildlife - some of which get a little too close for comfort.

In one of the driest deserts on earth, World Superbike Champion Neil Hodgson and Superman actor Henry Cavill set out into the extreme heat to put themselves, and their vehicle, to the test. Crossing the Taklamakan Desert in western China isn't something to be done lightly.It's a place of shifting sands, home to some of the largest dunes on the planet, where the landscape changes constantly. It's also a place of extreme temperatures: as low as -40°C in the winter, and over 50°C in the summer. Will the team successfully complete this expedition in a part of the world that is changing so fast, they may be some of the last people to experience the wilderness of the desert in quite such a spectacular way?