Cardiff, Wales - Jeep guys love nothing better than to showcase their off-road driving credentials, but even by their standards this stunt was extreme.

They challenged Olympic snowboarder Aimee Fuller to drive a Renegade Trailhawk up and down an Olympic-standard white water rafting course.

Lets put some numbers on that:

The Olympic course at the Cardiff international White Water Centre is a 250 metre man-made white-water rapid that drops 10 metres from top to bottom. More than four tons of water - close to three times the weight of the Renegade - rushes through it every second.

That's enough to fill an Olympic-sized swimming pool in 10 seconds, or 14.4 million litres of water per hour. Even in a white-water kayak, it's not for the faint-hearted.

"I'd never done anything like this before," admitted Fulller, 24, "so when I arrived and saw the power and heard the noise of the water I was nervous."

"But once I'd driven into the course and got through the first few drops I started to relax and enjoy it.

"It's pretty cool to say I was the first person ever to drive a car down a white water rafting course, not something you do every day."

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