Experimental

What happens when you try to play tennis on the wings of a flying plane, drop 7000 mints into 1000 litres of cola or waterski on a barstool? And can you use a fire hose to fly?

Tim makes a steerable hoverboard for Buddy to test on the dark waters of an abandoned quarry. Plus: ramps, jet-powered uphill skiing, and doing the splits across two moving forklift trucks.

Buddy straps on his water skis and attempts to hitch a ride behind a high-speed ferry. And can science help with racing the Tube through the Munich U-Bahn, and riding the fire hose rodeo?

Buddy tries to set a shovel racing speed record. And can Tim and Buddy fire a ball from a fast-moving bus, bounce it off a wall and catch it, back on the bus, like in Borussia Dortmund's viral video? Plus: explore what it takes to build a 20-kilo bamboo rocket.

Can Tim and Buddy build a world-beating powered swivel chair? Can human arrow Buddy become the world's fastest accelerating human? And will he take a massive free-fall from a Tbilisi tower block?

Can Buddy ski down an escalator or use a vacuum-powered climbing kit to scale the walls of an underground theatre? Plus: Tim refines the art of rolling downhill in a tractor tyre.