Disc.Turbo+1

Dave agonizes over the colour choice for the Ridler build. The previous five winners were all yellow, but Dave decides to go in another direction.

The Ridler car's engine and transmission are married for the last time and installed, and the team moves on to the wiring and other systems.

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.

Henry and Sam are in Herefordshire where they find sheds full of engines and autogyros, weird and wonderful vehicles before discovering a British classic.

The team is in Gloucestershire to uncover some oily treasure. They find a picturesque farm where deer, goats and pigs mingle with vintage agricultural equipment.

Henry and Sam are in Suffolk where they find a barn filled with Porsche tractors, Ducati pushbikes and many more rare and surprising vehicles.

Henry and Sam head to Witney where they meet Lez, a model-builder extraordinaire, and come away with an unusual challenge. Can they make a tidy profit for Lez's trike.

Carlos buys a 1970 Mercury Cyclone from a monster truck driver to turn into a cop-themed hot rod for a retiring police chief. Can he do it on a tight budget.

Carlos finds a partially-restored 1969 Camaro in a barn and convinces the owner to give him the job. Can Carlos please his client - and his bank balance.

The guys visit an island in search of treasure, and strike gold - a 1955 Bel Air. Carlos secures a high-end buyer who could make or break his business.

The bike world is about speed, power and image. The fastest, the most expensive, the toughest, and the biggest - take a look at the most outrageous machines and riders in the land.

The bike world is about speed, power and image. The fastest, the most expensive, the toughest, and the biggest - take a look at the most outrageous machines and riders in the land.

Morris Minor Traveller & Maserati Ghibli. The boys find a Morris Traveller at the largest private car collection in the UK. And, in Surrey they spot a rare but affordable Maserati.

In rural Devon the boys fall for the Gallic charm of a Renault 4. It's a rare limited-edition model - can Drew and Paul replicate its unique interior fabric.

Salvage aficionado Drew Pritchard visits Britain's oldest number plate maker. And, Paul and Drew disagree about adding a mega engine onto a tiny Italian classic.

Henry and Sam are in the Cotswolds, where they discover sheds full of stationary engines, obscure agricultural implements and some surprising collections of memorabilia.

Henry and Sam uncover vintage treasures in West Sussex. They go behind the scenes at one of Britain's most famous bike shops and find two extraordinary hidden gems.

Henry and Sam are in Herefordshire where they find sheds full of engines and autogyros, weird and wonderful vehicles before discovering a British classic.

The team is in Gloucestershire to uncover some oily treasure. They find a picturesque farm where deer, goats and pigs mingle with vintage agricultural equipment.

The Last Race? Richard redesigns his horsebox into an RV for the Cog racing team. The Cog's future is in doubt as Kamla and Richard debate whether racing can continue.