Discovery+1

How do they power the next generation of race cars that run on electricity? Plus, how do they make mead - the favourite drink of the infamous Vikings.

How do they build the steam-powered paddleboats that cruise the Mississippi River? And, how did they create the defence system called 'the waterwall'.

Mike finds a 1992 Corrado G60 smothered in aftermarket mods. Parts are rare and superchargers can be costly, but Elvis determines to get this risky project done.

To celebrate the series' 20th anniversary, Mike and Elvis set out to restore a Ford Fiesta Mark 1 and stage the show's largest ever car meet.

Dustin Hurt and his crew set out on their most ambitious, difficult, and dangerous season ever as they risk it all in the raging creeks of Alaska.

The Diesel Brothers attempt to dieselfy a Prius, try their hand at bull riding, and almost lose Chet in an unfortunate dolly race.

The Muscle and Diesel Dave rewrite Heavy D's autobiography. The Megaram is on a rescue but gets stuck in the mud, and Redbeard comes to the rescue in Salt Lake City.

With $1 million in crab at stake, the Wizard battles unrelenting waves. Jake strikes bargain to aid another captain, but it may come at a cost.

Winter unleashes its fury on the fleet. When Keith's winch seizes, the Wizard crew work a double shift to retrieve their pots. Plus, the Summer Bay runs aground.

How do they build a tractor every three minutes to power Indian agriculture? How do they cast the bronze bells that help Swiss farmers keep track of their cows.

How do they collect millions of real birds' nests to make birds' nest soup? Plus, how do they use aerospace technology to make rowers go faster.

How do they quadruple the power of the world's biggest engines with the most powerful turbochargers? How do they build new roads from old waste plastic.

How do they harness the wind to power a racing yacht to Olympic gold? How do they make a sword fit for an officer at the world's largest sword factory.

Quake And Break. Marty races back to the Adams homestead in Alaska to fix quake damage and build a bear-proof shelter in hopes of keeping their homestead dream alive.

Mike gambles on a Ford P100 imported from South Africa to Scotland. But it's hit with a series of problems - and will it cope with the UK's weather and roads.

Mike finds an Alfa Romeo GTV with some fails, but he reckons Elvis can sort it. Can he get it ready for an Italian road trip to re-create the GTV Cup.

Rick makes a big score at Vegas Valley. Parker's four-plant blitz stumbles. To keep his hot streak going, Tony pilfers more gear from his son Mike.

A countdown of fans' top 10 favourite moments across fifteen seasons. Which one will be number one.