What Could Possibly Go Wrong?

Can Kevin and Grant build an amphibious motorcycle that drives on the water? In an ultra-scientific mini-golf competition, who can make the most holes-in-one? Plus, the guys live out a real-life video game when they build and race virtual reality drones.

Kevin and Grant become monsters of the fairway when they turn a golf cart into a monster truck. The guys take on the science of Spider-Man when they engineer a way to scale a 50-foot wall. And they turn power tools into high speed racing machines.

Kevin and Grant build a homemade hydrofoil capable of hitting top speeds. Can they make it go so fast it glides over the water? The guys also learn if you can cook a steak with music, and whether they can build a table that can withstand an earthquake.

The guys engineer a plan to survive a three-story fall without a parachute, try to escape the legendary powers of homemade quicksand, and build a massive squirt gun from recycled items in the garage.

Kevin and Grant decide to build an ATV that can crash & flip -- and then land back on its wheels, then find the world's fastest way to chill a drink in under one minute, and play backyard astronaut in an attempt to send a camera to the edge of space.

Kevin and Grant outfit cars with armor and weapons and face off in a no-holds-barred demolition derby. Later, they build a lie detector and to see who's best at playing fast with the truth, and a chainsaw-powered chairlift takes them to great heights.

The guys turn chariots into speed demons by replacing horses with powerful motorcycles. Kevin and Grant find out what it takes to escape from Alcatraz, and they build the an air hockey table so big you can stand in the rink.

Kevin and Grant build supersized Rock ‘Em Sock ‘Em Robots and face off in a no-holds-barred battle royale. They'll also find out if they can build a motorcycle with just one wheel, and what it takes to survive the perfect storm.

Kevin and Grant build a submarine and see if they can survive at the bottom of a pool, supersize wind-up cars, and see if you can use duct tape to stop a bullet.

Kevin and Grant modify a go-kart to beat a truck in a head-to-head drag race! They build a radio-controlled bowling ball so they can bowl strikes at will. And play paintball in the dark with homemade night vision goggles!