In this episode, each team has to build a light weighted vehicle which has to be able to participate in a race through a 3-lap mud course. Contestants 'Model Ts' vs. 'Detroit Muscle'

Challenge to build a machine to carry each member on one lap around a off road course that has bumps, jumps, and water. Contestants Team Orange: Damage Team captain Ristow John Kalbot Expert James Aduskevich Team Green: The Long Brothers Team captain Brian Long Terry Long Gary Long Expert Mike Ferguson

Challenge to build a machine chunk a pumpkin the most accurately to hit a target. They must use human power only. Contestants Team Blue: The Young Guns Team captain Stan Brighton Jeus Beltran Brian Michem Expert Ron Toms Team Orange: Three Rusty Juveniles Team captain Jay Ray Tom Expert Waddy Thompson

Challenge to build to open locked treasure boxes 20 feet underwater. They have to send down an aquanaut in a diver suit and pump air to his helmet. Contestants Team Green: Art Attacks Team captain Ken June Wayne Expert Greg Brian Team Blue: The Young Guns Team captain Stan Brighton Jeus Beltran Brian Michem Expert Bob Kirby

Challenge to build a machine that can race to an island to save all their team mates one at a time. Contestants Team Blue: Art Attacks Team captain Ken June Wayne Expert Justin Manley Team Purple: The Metal Medics Team captain Dr. Bill Alex Bob Expert Larry DeCamm

In this episode, each team has to build a car which has to be able to hit a ball with precision. Then, the cars will be tested in a very strange competition which consists in getting the lowest score in a giant-sized 3-hole short golf match. Contestants "Jet Doctors" vs. "High Flyers"

In this episode, each team has to build an amphibious vehicle which has to resist sea water. Then, the buggies will be tested in a competition which consists in "saving" a mannequin from an island - passing through the beach and the sea - in the less time possible. Contestants "Jet Doctors" vs. "Auto Amigos"

In this episode, each team has to build a machine which has to be able to launch heavy objects. It doesn't matter if they build a catapult, a giant robot, etc... Then, the machines will be tested in a competition which consists in launching a 150 lb washing machine as far as possible without destroying it until it crashes into the floor. Contestants "High Flyers" vs. "Superchargers"

In this episode, each team has to build a sled-puller tractor which has to be under 2000 lbs. Then, the tractors will be tested in a competition which consists in pulling a medium-sized sled through a simple course. The team that pulls the sled further wins. Contestants "Jet Doctors" vs. "Missile Masters"

It will be a hot time in the junkyard this episode as the Auto Amigos take on the Dirty Drivers in a fast and furious challenge to build a trike powered by a jet-engine. The race will consist of three trips down a one-eighth mile track...one at a time. The team that records the fastest time in any of their three trips will advance to the semi-finals. The Dirty Drivers are building a true jet engine on a lightweight frame. A propane tank will provide the gas and a spark plug will act as the ignition source. The key ingredient will be a turbo-charger from a truck. The turbo charger has two fans that turn in opposite directions. One fan will suck the propane into a combustion tank while the other will suck the heated air out and through a nozzle. If there's time, they also want to build an afterburner which should increase their speed. An afterburner ignites any remaining gasses in the chamber for added thrust. Time is NOT on their side.

The ultimate way to deal with traffic jams would be to push the offending cars out of the way and go through. Well, for the High Flyers and Big Shots, that dream is about to come true. The will be building a machine that will power it's way through a gauntlet of cars. A bunch of cars have been strewn down a track. The team that has the fastest total time after 3 runs (and a different driver each time) through the cars will advance. However, if they go outside of the yellow boundaries on the sides of the track, they incur a ten second penalty. So it isn't just speed...it's precision as well.

The teams embark on a ten-hour build of two completely different vehicles. One team builds a hot rod with a big, heavy engine and the other designs a car with a light body and less powerful engine. George and Cathy get in on the shoptalk to see why the teams went the way they did and interview expert and competition judge Pat Foster, a veteran drag racer. The next day, the teams have three chances to see who can get the best possible time.

Challenge to build a hovercraft that is the fastest in a relay race. Each member must take a turn driving the hovercraft around the course. Each team choose a different way to build. One goes for heavy using two engines the other team goes for light weight using only one engine. Contestants Team Yellow: The Texas Scrap Daddies Team captain Ken Mark Sean Expert Terry Chapman Team Green: The Long Brothers Team captain Brian Long Terry Long Gary Long Expert Bob Wind

Challenge to build a that will not only attain the greatest height but will also bring a payload an ostrich egg back to earth without damage. Contestants Team Green The Long Brothers Team captain Brian Long Terry Long Gary Long Expert Bruce Lee Team Turquoise Art Attacks Team captain Ken June Wayne Expert James Tucci

Challenge to build a vehicle that can jump crushed cars, race down a dirt straight away, but can still be agile enough to handle tight turns. Contestants Team Blue The Law Dawgs Team captain Tom Dave Mike, Expert John Seasock Team Orange Ghost Mountain Riders Team captain Scotty Clark Johnson, Expert Roy Hooser

The Challenge is to build a vehicle that not only must carry all members to a gap, but then span the gap without leaving any parts behind, retrieve a flag, and go back to where they started in a head-to-head race. Contestants: Team Red: The Miami Gearheads Team Captain Milton, Frank, Anthony, and Expert Bill Harris Team Blue: Canadian Junkies Team Captain Gary, Kevin, Mike, and Expert Richard Hunt

Challenge to build the most accurate and destructive cannon. The objective to break the most concrete bricks in the opponent's wall. They both get three shots both teams thinking the 1st being pretty much a throw away shot to sight in the sights Contestants Team Green The Hicks Family Team captain Sam Anna Jakey Expert Bruce Paulson Team Yellow Washburn Boys Team captain Ray Shane Jon Expert Bernie Paulson

Challenge for each team to build a raft that can carry two team members out of scrap. Then race the rafts up and down a white water course trying to avoiding rocks and not capsize. The team that completes the course in fastest time wins and advances to the next round. They have 3 laps to get the fastest time. Contestants Team Red The Dukes of Spook Team captain Dave Smith, Laura Frenchy, Expert Chuck Ratley. Team Blue Nasa's Rocket Men Team captain Mike Jim Tom Expert Doug Riddle

Challenge to build a glider that can stay aloft for the longest time. The course is a large hill. One team goes for a traditional design the other goes more radical. Contestants Team Red Miami Gearheads Team captain Milton Frank Anthony Expert Chuck Slusarczyk Team Green The Hicks Family Team captain Sam Jakey Anne Expert Barnaby Wainfan

Challenge to build to a torpedo that can maneuver around obstacles in the water to reach the enemy ship and hit a target to register a kill. The best of five head-to-head rounds wins. Contestants Team Dark Blue Nasa's Rocketmen Team captain Mike, Tom, Jim, Expert Joe Curren Team Light Blue The Law Dawgs Team captain Tom, Mike, Dave, Expert Greg Bryant

Challenge: Each team has to build the most powerful demolition machine they can. Then, they'll try to destroy 9 panels of wall built from concrete blocks. The team that completely destroys the panels in less time wins. Contestants Team Red Miami Gearheads Team captain Milton, Frank, Anthony, Expert Dan Jacobsen Team Dark Blue Nasa's Rockemen Team captain Mike, Tom, Jim, Expert Tim Wilson

In this episode, each team has to build a drilling machine. Then, the vehicles will be tested in a competition which consists in digging a hole big enough through 3 concrete walls to get all the team and the machine in it. Contestants: "Turbines" vs. "Bold Three"