Disc.Turbo+1

In Mount Vernon, a mysterious clog backs up a downtown neighbourhood's sewer line. In Cleveland, the debris from a severe storm backs up a critical grit chamber.

In Mount Vernon, an abandoned sewer line is overwhelmed by stagnant human waste. And in New London, a large clog could take down a city building.

In Brooklyn, Dirty Water Don repairs outflow gates at a treatment plant. In Massachusetts, Rick tackles a grease trap at a meat cutting facility.

Winnebago Industries build a luxurious RV, and there's a look at historic NASA Astrovans. Music legend Willie Nelson shows off his tour bus.

A visit to an historic car auction in Paris has Rick's mind racing. The guys swing for the fences customizing a 1937 Zephyr for a demanding millionaire.

Pennsylvania locals go all-out for $5,000. Whoever goes all the way will be racing against Axman, who is known for never backing down.

Michigan. Michiganders compete for $5,000, and a racing wagon surprises everyone. Then, the last local standing goes up against Bobby Ducote for another $5,000.

Farmtruck and AZN gather another group of local racers in North Carolina. The last racer standing will get a chance to race against Justin Swanstrom.

Locals race in Alabama for $5,000, and the competition is feisty. The winner goes up against Scott Taylor, who has a surprise in store.

Locals from across America gather for the finale, where they'll face off for the win. Then, the final racer confronts small tire legend Boosted GT.

Henry and Fuzz find a rare custom IRIS Sporting Trials Car. It's irresistible for the boys who get to work returning it to its former glory.

The duo explore Shane's epic collection, where a stylish Lanchester LD10 catches their eye - a perfect fit for their love of post-war British cars.

Mike and Elvis take on a Porsche 911 in rough shape: it turns up in pieces on a trailer. If they can revive it, they'll take it on an epic drive through the Cairngorms.

Mike and Elvis have one of their toughest challenges yet: can they make an Audi RS6 estate car faster than a sportscar? Elvis has doubts after a hazardous test drive.

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.

Mike brings back a modern classic, a rare 2001 Audi S4 Avant. Can Ant fix a mysterious engine leak, systemic problems in the cabin and an ugly dent in the rear.

Mike and Ant take a chance on a 2006 Porsche Cayenne Turbo S. This performance SUV has a lot of horsepower - but potentially daunting repair bills.

The 2002 Mercedes Benz E55 AMG is the pinnacle of luxury and supercar performance. Can Mike find profit in a neglected example as Ant tackles a major service.

In Mount Vernon, a mysterious clog backs up a downtown neighbourhood's sewer line. In Cleveland, the debris from a severe storm backs up a critical grit chamber.

In Mount Vernon, an abandoned sewer line is overwhelmed by stagnant human waste. And in New London, a large clog could take down a city building.

In Brooklyn, Dirty Water Don repairs outflow gates at a treatment plant. In Massachusetts, Rick tackles a grease trap at a meat cutting facility.

How do billions of bees produce tonnes of California almonds? How do they clear the snow to keep Norway's planes in action? How are tricky stains removed.

How is a modern fighter jet built? How do Belgium's Trappist monks make the world's finest beers? How do they build America's best performing SUV.

Paul and Helen are tasked with helping a family man find an exciting hot hatch. Their client wants a fun-to-drive motor with great handling.

A local television presenter wants a motor with a stylish interior and a 2.0-litre engine. Paul and Helen hunt for the perfect luxury SUV.

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.

In the New Forest, Hampshire, Henry and Sam visit a collector of Americana. What rare bicycles and classic sportsters will they find in his sheds.

In the Midlands, Henry and Sam visit the sheds of a bike builder. He has a collection of rare bikes, but it's the surprise in his freezer that attracts the duo.

Richard's team work overtime to complete their first big restoration - a 1950s Alvis. Plus, they are under pressure to get their racing MGB fit for competition.

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.

Comedian Jeff Dunham wants period-correct parts and technology for the restoration of his rare 1970s sports van. Plus, Beau brings in a 1929 German economy car.

A Rare Revival. Ant uncovers an extremely rare 1980 Alfasud that's been locked away for 35 years. But he learns reawakening the engine proves problematic.

Armed with no knowledge but plenty of passion, comedian Guz Khan begins his mission to modify a Honda S2000 into a dream custom car.

On a trip to Barcelona to buy antiques Drew uncovers an early, two-door Range Rover. In Hampshire, Paul and Drew disagree on how to restore a Porsche 944.

Locals from across America gather for the finale, where they'll face off for the win. Then, the final racer confronts small tire legend Boosted GT.

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.

Henry and Sam are in Lancashire, visiting a petrol head with a collection of vintage bikes and rare British and American four-wheelers.

In Oxfordshire, Henry and Sam find a shed full of different items. Sam has his eye on some model trains while Henry finds a vintage bike.

Locals in Ohio compete for $5,000 and a chance to take on Street Outlaw Doc for another $5,000. And a small-tyre racer is racing for a cause.

Mike takes the family on a trip down memory lane. He finds new cars for his dad and sister and helps Richard Hammond's mum sell her MX5 for charity.

Guz Khan battles bucket seats, meets a Ferrari modder, and explores Britain's car scene - all while upgrading his Honda S2000 with style and swagger.

In California, catastrophe strikes one of America's most important intersections. Plus, there's a demolition disaster in Canberra, Australia.

Locals in Ohio compete for $5,000 and a chance to take on Street Outlaw Doc for another $5,000. And a small-tyre racer is racing for a cause.

Richard's team work overtime to complete their first big restoration - a 1950s Alvis. Plus, they are under pressure to get their racing MGB fit for competition.

Cool Catalina. Joe dusts off his prized '65 Pontiac Catalina to give it the facelift it deserves - new brakes, trick frame and a bigger, badder LSA 600-hp motor.

Mike wants to splash the cash on a custom bus but Edd favours a more conservative campervan. Edd is an air-cooled expert but will this strategy pay dividends.

How do volcanoes help produce the world's best guacamole? How do they build trucks that can cross swamps? How do they make the world-famous Fiskars scissors.

How do they make steel cables strong enough to hold up a 50,000 tonne bridge? Why do modern hunters use medieval weapons.

An aerospace engineer has £20,000 to spend on a noisy and fast car. Paul and Helen will need to be creative to find an affordable big Coupe with rear seats.

Grant asks Helen and Paul to find him a prestige car that costs no more than £360 a month. He wants a sporty design, a large boot and a powerful engine.

On a trip to Barcelona to buy antiques Drew uncovers an early, two-door Range Rover. In Hampshire, Paul and Drew disagree on how to restore a Porsche 944.

Henry and Sam are in Lancashire, visiting a petrol head with a collection of vintage bikes and rare British and American four-wheelers.

In Oxfordshire, Henry and Sam find a shed full of different items. Sam has his eye on some model trains while Henry finds a vintage bike.

Where's All The Money? Richard must come up with a plan to raise emergency funds. And, the team enter their first race at Donnington Park, but engine problems threaten to derail the project.

Derek finds a 1937 Chevrolet Deluxe that's been off the road for 20 years. But can it make the 150-mile drive to the General Motors headquarters in Detroit.

The Galpin team take on two famous Hollywood cars built by the iconic George Barris. An icon from the silver screen gets a refresh and a tow truck is restored.

Teenage Dreams. Ant finds a 1977 MG Midget 1500, just like the first car he restored as a teen. With tight margins and a rust issue, he pulls in his family to help.

Guz Khan battles bucket seats, meets a Ferrari modder, and explores Britain's car scene - all while upgrading his Honda S2000 with style and swagger.

Volvo 122S Amazon & Toyota MR2. Drew and Paul check out a Swedish classic: the Volvo Amazon. And, Paul falls for an early Toyota MR2, but can he convince Drew it will turn a profit.

Locals in Ohio compete for $5,000 and a chance to take on Street Outlaw Doc for another $5,000. And a small-tyre racer is racing for a cause.

Mike is looking for a British classic and finds an XK8 Jaguar, but it's not in good shape. Will Edd be able to fix it up within budget or is this project about to stall.

Henry and Sam rummage through a tractor enthusiasts heaven, sheds and fields full of old machines. Their attention is caught by an old vintage plough.

Henry and Sam find themselves down in the South West rummaging around another belting shed. There are so many things on offer they find it hard to choose.

The fastest small-tire racers in VA come to show off their skills, and the competition is fierce. One cocky racer comes face to face with Boddie Jr.

A visit to a popular car show inspires Mike to organise his own event in an effort to promote his expanding business - but will anyone turn up.

Guz upgrades his S2000 with a thunderous stereo. Plus, he meets sound guru Iceman Ian and learns drifting tips from Aleyna.

In Arizona, a fire destroys a river crossing. In California, a concert hall causes a storm. In Ohio, a driver and her vehicle are swallowed whole.

The fastest small-tire racers in VA come to show off their skills, and the competition is fierce. One cocky racer comes face to face with Boddie Jr.

Where's All The Money? Richard must come up with a plan to raise emergency funds. And, the team enter their first race at Donnington Park, but engine problems threaten to derail the project.

With updates well underway on Joe's prized '65 Pontiac Catalina, Joe and the guys chop a '41 DeSoto that has seen better days.

Mike is on the lookout for a two-seat roadster with attitude in the form of the original BMW Z1. This zippy sports car could make a tidy profit when Edd gets stuck in.

How do they make Tennessee whiskey the traditional Lincoln County way? How do night goggles work? How do the Finnish relax in 160-degree saunas.

How do they grow enough vanilla to make the world's favourite ice cream flavour? How are anchors for huge ships built? How are 12 million lighters made every year.

Motorcycle enthusiast Ellie wants to find a car that's fun to drive. Paul and Helen help her pick out a supermini that feels quick and looks good.

Paul has owned over 250 cars and now wants something exotic. With a budget of £35,000, he's looking for a stylish grand tourer with a powerful engine.

Volvo 122S Amazon & Toyota MR2. Drew and Paul check out a Swedish classic: the Volvo Amazon. And, Paul falls for an early Toyota MR2, but can he convince Drew it will turn a profit.

Henry and Sam rummage through a tractor enthusiasts heaven, sheds and fields full of old machines. Their attention is caught by an old vintage plough.

Henry and Sam find themselves down in the South West rummaging around another belting shed. There are so many things on offer they find it hard to choose.

Richard's business goes global after a call from an international car collector in Singapore. And, Richard helps his best friend Les fulfil a childhood dream.

Derek and Sean Bieri head back to Zweifel Motors in the Black Hills of South Dakota to revive an Oldsmobile station wagon Derek has been eyeing for 16 years.

The team prepares for an exhibit at the Corvette Museum. Plus, Beau and Dave take a trip down memory lane while riding in the first car they built together.

American Icon. A 1964 T-Bird needs pricey American parts to restore it to its former glory. And Ant gets a hand from his mate, Mike Brewer.

Guz upgrades his S2000 with a thunderous stereo. Plus, he meets sound guru Iceman Ian and learns drifting tips from Aleyna.

BMW 2002 Touring & Volvo 850R. Drew and Paul look at a Volvo 850R station wagon, the car that became an instant classic when it appeared in the 1994 British Touring Car Championship.

The fastest small-tire racers in VA come to show off their skills, and the competition is fierce. One cocky racer comes face to face with Boddie Jr.

Mike tracks down a racy Gardner Douglas Mark 3 AC Cobra with only 800 miles on the clock. But Edd needs to make it green to make it legal; will he need to buy a new engine.

In Cornwall, Henry and Sam find some very rare early-1900s steam-powered cars. If they're very lucky, the duo might even get to ride in one.

In Somerset, Henry and Sam visit a man with an amazing collection of motorbikes. He has some rare finds, but are they too expensive for the guys.

Minnesota locals visit Brainerd International Raceway to battle each other for $5,000. The final racer will face the legendary Daddy Dave.

Jimmy deVille works on a motorsport legend, the Escort Mk2 rally car. When he finds a rust-free South African import, the team take this custom build sideways.

Guz wraps his Honda in gold, meets anime car artist Rhian, and learns vintage car building - all before mastering doughnuts on the drift track.