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How do they cultivate green salad on scorching desert plains, how do they make rigging for ships and how do they produce lifesaving insulin from bread?

How do they build one of the world's most powerful locomotives? And how do they turn cows' milk into clotted cream?

1985 Mercedes 300 TD. 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.

1974 Jensen Healey. Mike finds a two-seat convertible roadster for Ant to recondition. With suspension in need of an overhaul and a tatty exhaust, Mike returns to the UK for parts.

Stuart Mills. In a shed in Nottinghamshire, Henry and Fuzz find a rugged Ural sidecar. Built for war and wilderness, can they revive it, or will it win the battle?

David Kingerley. Henry and Fuzz visit David's Derbyshire shed, a treasure trove of vintage mechanical gems, and uncover a wonderful Monet-Goyon motorbike.

More everyday items go under microscope. How are objects including aircraft cabinets and motorcycle brake locks produced?

More everyday items go under the microscope with a look at how objects such as powder horns and inner tubes are made.

Teleshopping.

Teleshopping.

Scottsdale, Gullwing and Lusso. Wayne takes his newly restored 1964 Ferrari Lusso and 1957 Mercedes 300SL Gullwing to auction at Scottsdale - will they fetch the right price?

Hartung: Motorcycles. Wayne visits Lee Roy Hartung's amassed assortment of motoring and vintage collectibles includes cars, motorcycles, license plates, and everything in between.

Hartung: Cars. The late Leeroy Hartung's amazing collection includes the first Hertz rental car and a 1950 Edwards roadster. Will Wayne win the 1950 Veritas he has set his heart on?

Scottsdale: 1939 Canoe Woodie. Wayne puts his 1939 Ford Standard Woodie Wagon up for auction. Will a canoe add to its value or will it sink like the competition?

Veteran Car. To celebrate their 100th car Mike and Edd restore a Darracq Type L. Will they be ready in time to face their toughest ever test drive - the London to Brighton Run?

Fiat Panda 4x4. A smart city car- the Panda is also a surprisingly good off road hack. Mike tracks down a model with potential, Edd does the mechanics, and they try to turn a profit.

Datsun Is Shining. Mike and Ant finally get hold of the greatest British sports cars never to have been built in the UK, a 1969 Datsun Roadster. But it's prone to breaking down.

Saab - Part 1. Mike Brewer joins forces with top mechanic Edd China to get a second hand classic Saab 900 Turbo back into road cruising condition.

Saab - Part 2. Mike spends most of the budget when he picks up a classic Saab 900 and this doesn't leave Edd much room for manoeuvre. Will they still turn a profit at auction?

Jaguar XJ6. Mike and Elvis try to revive the 'daddy' of British executive saloons: a 1974 Jaguar XJ6. But it's a risky buy: it's not been on the road since 1990!

Volvo P1800s. The team can't wait to get hold of a Volvo P1800 but the problem is, these cars are rare and Mike can only find a single car that's in budget. Will it be good enough?

2004 Dodge Ram Srt-10. The Dodge SRT-10 is considered a 'halo car' - the classic worker's truck has a supercar-engine in it. However, this brutish vehicle needs some serious work.

In North Yorkshire, Sam and Henry examine an incredible collection of classic American motors. However, the guys are most interested in a rusty Mini.

Henry and Sam look around a shed full of vintage motorcycles and intriguing memorabilia. The guys see potential in a Yamaha RD350, but can they afford it?

Sam and Henry are in Somerset to check out a magnificent collection of World War Two vehicles, including a Norton 16H and a BSA folding bicycle.

Henry and Fuzz are off to Bolton where some classic motorcycles catch Henry's eye, but Fuzz is more interested in wackier treasures, such as a double-decker bus turned crane.

Henry Cole and Guy Willison pay a visit to motocross lover Terry in Hereford. He's got everything from perfectly restored motorbikes to a hangar of automotive horrors.

Henry and Guy have a rummage in Nigel's sheds in Bexley Heath, where they uncover memorabilia, trinketry and a bicycle that takes Henry back to his childhood.

Henry and Guy are invited to Yeomans in Worcestershire, which is packed to the rafters with classic British motorbikes, but will the boys be able to get any of them running?

Henry and Fuzz visit an ex-commercial pilot with two hangars' worth of stuff. He's got classic cars and even planes, but will a BSA with missing parts prove a bridge too far?

Beach Buggy. In Leicestershire, Henry and Fuzz explore a shed full of classics, selecting a 1970s VW Beetle Beach Buggy. Can they restore it in time for a Somerset beach ride?

Vek McGuire. Henry and Fuzz head to London to meet Vek and uncover a tired 1937 James motorcycle. Drawn in by its graceful lines, the guys get to work.

Dave Parkin. Henry and Fuzz visit Dave to acquire his Honda C90 and Gaz-69 Jeep. They're determined to revive both machines and return them to road-ready glory.

The expert restorers breathe new life into three cherished items. A 1960s alarm clock gets ticking again, and a dented metal horse is revived.

A Secretive Box. Angus clears a home of classic books to fund a trip for a widower, before the discovery of an unusual violin hits the high notes at auction.

Robot Dog. Failing to find opal, The Mooka Boys embark on a risky mission at night. The Bushmen use a robot dog to help map out their underground mine.