The World's Toughest Driving Tests

Actor Will Mellor and presenter Kirsten O'Brien take on the ultimate driving challenge, travelling the globe learning to drive and race the world's biggest, most expensive and hardest-to-master vehicles in a bid to find out who is the better driver. To begin, Will and Kirsten go head to head and battle it out in the Romanian Army's frontline combat tank, the TR-85, but first they must undergo a week's hard graft in sub-zero conditions under the scrutiny of Captain Oancea. It takes twelve weeks to train a tank driver, but Will and Kirsten have just three days to master the skills needed to race against each other at the end of the week. Will's first short, sharp, shock is swapping his celebrity mansion for a shared army barracks with three burly Romanian soldiers. For Kirsten the reality of driving a machine built for war is a real concern, but she learns to respect the men who drive the tanks and is determined to see her duel with Will through to its nail-biting conclusion. They must endure temperatures of minus 17, handle real firearms and face a combat situation under a barrage of enemy fire whilst grappling with night vision. In the final showdown, Will and Kirsten must bring together all the skills they've learned during their intense training regime. There can only be one winner - is it Will or Kirsten?

Will Mellor and Kirsten O'Brien take on the ultimate driving challenge, travelling the globe learning to drive and race the world's biggest, most expensive and hardest-to-master vehicles in a bid to find out who is the better driver. After the Romanian battle tank, this time Will and Kirsten are staying much closer to home. Essex, in fact, where they are faced with driving the multi-storey mother of all vehicles, standing 15 metres high and the powerhouse of the docking industry - the straddle carrier. Desperate to level the scores at 1-1, Will goes all out to beat rival Kirsten and he's going to use every trick in the book to achieve it, even if it means putting their friendship under strain. Over three days they must learn three key skills, each of which will equip them with the know-how to drive the straddle carrier and prepare them to go head to head at the end of the week, where only one of them can win outright. But before they get to drive the straddle, they must first overcome their fears and come to terms with driving 50 feet in the air.

The competition hots up between rival petrolheads Will Mellor and Kirsten O'Brien. The duo go head to head in one of the world's biggest vehicles, the Terex TR100, a dumper truck the size of a house. The battleground is the UK's biggest opencast mine at Broken Cross in Scotland. Site manager Colin Slater puts Will and Kirsten through their paces in a mentally and physically demanding training regime. It takes months to master the vital skills needed to drive the 100-tonne dumper truck; Will and Kirsten have just three days. After a turbulent and exhausting week learning to drive the Terex and living alongside the men who work in the mine, Will and Kirsten go down to the wire in their showdown. Will it be Kirsten or Will that steals victory to prove they're the better driver?

Will Mellor and Kirsten O'Brien take on the ultimate driving challenge, travelling the globe learning to drive and race the world's biggest, most expensive and hardest-to-master vehicles in a bid to find out who is the better driver. With Will trailing Kirsten 2-1 at the series half-way point, the competition gets personal and the rivalry intensifies as they head to Canada to drive the world's most sophisticated amphibious vehicle, the 47-tonne, two-million-pound go-anywhere Arktos. Brimming with confidence after her win driving the 100-tonne Terex truck in Scotland, Kirsten is about to face a fierce fightback as Will battles to break even. Over three intense training days, mentor Bruce Seligman puts Will and Kirsten through a series of lessons and tests to prepare them for a final race, where there can only be one winner. The Arktos is unlike anything Will and Kirsten have ever driven before and as they grapple at the controls on land, river and even the Pacific Ocean, the unthinkable happens and Kirsten crashes the supervehicle. Distraught and emotional, she has to take stock. Can Kirsten restore her confidence and widen the lead, or is Will about to take victory and level the score?

Will Mellor and Kirsten O'Brien take on the ultimate driving challenge, travelling the globe learning to drive and race the world's biggest, most expensive and hardest-to-master vehicles in a bid to find out who is the better driver. With the scores level at 2-2, Will and Kirsten are flying to France for the next examination. High in the Alps on the French-Swiss border, in the breathtaking ski resort of Châtel, they must learn to drive and then race the gravity-defying and mountain-climbing Snow Groomer, a machine packed with over 400 horse power. Mentor and judge Jean-Louis puts Will and Kirsten through a gruelling three-day training regime to prepare them for race day, when they must battle it out for victory. But after a week packed with crashes and blunders and Will dislocating his knee, it is an uphill struggle just to getting to the starting line. Desperate to beat rival Will, Kirsten has another battle to fight - her anxiety. Racked with fear, can she keep her cool and her emotions in check? So, it's all to play for in this penultimate driving test. Faced with driving their most challenging vehicle yet, Will and Kirsten know that whoever wins this week takes the lead into the final showdown.

After six weeks globetrotting, driving the world's most jaw-dropping machines, actor Will Mellor and presenter Kirsten O'Brien take on their final, and deciding World's Toughest Driving Test. With the series score level, it's a climactic end and it all comes down to one last race driving the tree harvester - a six-wheeled monster truck with teeth, deep in the Uruguayan forest. It will be a gruelling week for Will and Kirsten and there's one man they need to impress, mentor David Henderson. Scotsman David transformed tree harvesting in Uruguay 14 years ago and nobody is better placed to teach Will and Kirsten the do's and don'ts of modern day tree felling than him. Tough-talking David's regime of lessons and tests will prepare Will and Kirsten for the ultimate head-to-head at the end of the week, but only if they buckle down, listen and learn, fast. Throughout the week, Will and Kirsten believe they have the edge over the other, but an eleventh hour set back puts the final race in doubt as Mentor David drops a bombshell. David's not happy for them to proceed to the race. After driving everything from tanks to dumper trucks, the possibility of not being allowed to race is a body blow to Will and Kirsten. In true fighting form and after one final push, Will and Kirsten convince David that they're capable of handling the awesome tree harvester and the race is back on! Thousands of miles from home and in the searing 40 degree sunshine, the heat is well and truly on as Will and Kirsten desperately battle for victory. But who will be the ultimate winner of World's Toughest Driving Tests?