Quest HD Saturday

The actor sets out to discover Australia's wild side, eschewing big cities in favour of travelling the country's dirt roads. He begins in the continent's driest state

Action from the third round of the campaign, held at Knockhill

Mike and Elvis engage in the ultimate Aussie showdown: Ford versus Holden. Can their Ford XR8 outpace the Holden GTS at the Mount Panorama circuit?

Mike and the team work on a 2002 Mercedes Benz E55 AMG, a car considered to be the pinnacle of luxury and supercar performance

Mike Brewer goes to Germany to buy a Mercedes and gets his hands on a 1984 280SL, but mechanic Edd China is not impressed with its brakes

Mike Brewer spots a well-maintained Mercedes 560SL, which was the car of choice for rich petrol-heads in 1987, and sets out to give the vehicle a complete refresh

Mike Brewer and Edd China are asked to restore a powerful, luxury 1983 Mercedes 500 SEC, but face a steady challenge in returning it to its former glory

Mike Brewer sets out to prove he can make money on a car without spending a fortune, while Edd China turns his attention to restoring a Mercedes-Benz SLK on a very tight budget

Mike and Elvis engage in the ultimate Aussie showdown: Ford versus Holden. Can their Ford XR8 outpace the Holden GTS at the Mount Panorama circuit?

Henry and Sam look around an incredible Americana collection in Cornwall. After examining an array of classic motors, Sam springs a big surprise on Henry

Henry and Sam are invited to look around the workshops of the National Motorcycle Museum. The guys consider bidding on a 1926 Ariel and a 1927 BSA

Sam and Henry travel to Leicestershire to meet former motorbike racer Eddie Roberts. His impressive collection includes a rare 1962 Greeves Sportsman

Presenter Henry Cole and motorcycle restorer Sam Lovegrove are in Herefordshire to look around a farmer's eclectic collection

The duo visit Hampshire, where a shed full of motorbikes leads them to a rare Yamaha Maxam, but getting it going again proves trickier than expected.

Henry and Fuzz visit Duncan in Wiltshire, where they uncover a mighty vintage diesel road roller hidden amongst sheds packed with farm machinery

Simon has ambitious plans to turn a pile of old slate into an unusual lamp, while Henry Cole sets his heart on upcycling the seat from an old pony and trap

Henry Cole and Simon O'Brien are in Surrey, where they visit a collector of Kawasaki motorbikes

Around the world, there are extraordinary building mistakes. Design teams and experts analyse what went wrong and how engineers are fixing them

In Germany, tragedy strikes on one of the world's fastest passenger trains. Plus, a casino inferno in Las Vegas triggers a massive rescue mission

The Desert Diggers venture underground in search of gold-rich paydirt. Plus, Shane Calegari goes high-tech to break new ground

A community of crystal hunters travel to the far reaches of the Outback to unearth lucrative gems - their goal is to find the next $1 million pocket

Treasure hunter Darrell Miklos attempts to decode and follow a 'treasure map' created by his boyhood idol, former NASA astronaut Gordon 'Gordo' Cooper

Darrell Miklos seeks clues from Gordon 'Gordo' Cooper's past, and while his widow reveals many secrets, one of his former Nasa colleagues remains silent on the subject of treasure

Find out how graphene, the world's smallest car, force testers, and composite cars are made

Find out how LED tubes, chocolate peanut butter bars, and robotic medication dispensers are made

A look at how objects including electric stand-up vehicles, beer coasters and forged door handles are manufactured

Investigating how rock crushers, fabric lampshades, cake sprinkles and steam irons are made

Buying goods from home

Buying goods from home

Around the world, there are extraordinary building mistakes. Design teams and experts analyse what went wrong and how engineers are fixing them