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Mike has upgraded this car plenty of times before, but this time he's found a major bargain. With a few minor changes, he's hoping to double the price.

Mike tracks down a stunning Mercedes SLK. But can Edd make this classic car roadworthy without blowing their small budget.

Mike wants a G Wagen - the popular German four-by-four. He finds one and Edd gives it a facelift, with a 2012 front end and rear lights. Will they land a big profit.

Mike and Elvis are determined to celebrate a dying breed, the iconic V8 engine. They've chosen a classic sports car to do it, the Mercedes SL55.

Alicia Waddingham transports a hazardous load on heavily corrugated roads. Hibbo takes on Australia's harsh deserts and oncoming mega loads.

Jim Foody transports critical medical supplies through flood-ravaged roads. Jake Pakai hauls multimillion-dollar equipment across narrow highways.

Josh Carter hauls a monster oversized convoy. Steve Grahame transports a triple trailer load whilst battling against Mother Nature.

How do they make giant floating power stations that provide power around the world? Plus, how do they fabricate the world's smallest aircraft.

How do they make batteries from brine? How do they build a tropical island from trash? And how are fragrances blended to create different types of scents.

Classic car expert Paul Cowland and builder-restorer Helen Stanley help buyers find their dream rides within their budget - from SUVs to high end sports cars.

Classic car expert Paul Cowland and builder-restorer Helen Stanley help buyers find their dream rides within their budget - from SUVs to high end sports cars.

Paul persuades Drew to buy a Triumph TR4 and he pays homage to one of his automotive heroes. The boys reinstate a stylish feature that never made it to production.

Henry and Sam are in Bodmin Moor rummaging through a collection built up over 25 years. It includes amphibious craft, motorbikes, nuts and bolts.

In Redruth, Henry and mechanic Sam are confronted with sheds filled with ramshackle contents, from Harry Potter's Anglia to a model canary-yellow Lamborghini.

Richard explores one of the world's biggest man-made engineering projects: the Kölnbrein Dam, which can hold back an incredible 200 million tonnes of water.

Derek finds himself a 1950 Ford 8N tractor. But with a cracked engine block, Derek will have to revisit his farming routes to make this implement operational.

Chad Hiltz makes an elegant one-of-a-kind coupe in his shop. He uses spare parts, recycled metal and a rusted out 1939 Studebaker Commander to build the car.

A 70s Revival. Ant has found an iconic VW Campervan that's been abandoned mid-restoration. The interior needs a full refit, plus a suspension overhaul.

In Texas, an oil refinery explodes. Flooding in Iowa destroys an important railroad crossing. What engineering mistakes caused these disasters.

Drew and Paul rescue a classic: a Vauxhall Viva. The car was extensively modified in the 1960s but after years in storage, it's well past its best.

The team fires the Ridler build for the first time, finishes an endless list of details and appointments, and loads the car for the trip to Detroit.

Mike and Elvis find and fix up a recently imported Fiat 600. It needs a lot of work, including a full repaint and an engine overhaul.

Presenter Henry Cole and motorcycle restorer Sam Lovegrove scour the UK's sheds for hidden vintage automotive treasures to fix up and sell on.

Henry and Sam are in the heart of Oxfordshire where they find rare Minis, 1970s Rollers, and a pristine rally car - but can they get her running.

At the Ridler tech test, Dave and Kev scramble to fix a transmission problem. When the show opens, they get their first chance to see the competition.

Dave and GT resurrect a farmer's 1977 Toyota Land Cruiser. Then it's love at first sight when they find a 1975 VWL-Bug 1600 that's had just one owner.

In California, a dam collapse causes chaos. In Massachusetts, the tallest library starts cracking. In Italy, a vital bridge comes crashing down.