Yahoo News 
Would you take on 'the world's scariest waterslide'? Huge 17-storey slide is 'tallest and fastest ever built'
The vertigo-inducing 'Verrückt', which is 264 steps high, sees riders reach 65mph on their way down
At 17 stories high and reaching speeds of 65mph, this extreme waterslide isn't for the faint-hearted.
The vertigo-inducing slide, which brave souls reach by climbing 264 steps, is set to be the tallest and fastest of its kind when it opens next year.
The slide, called 'Verrückt' (German for 'Insane') launches people down in four-person inflatable rafts at breakneck speed.
Designers who made the stomach-turning ride hope it will officially be crowned the tallest waterslide in the world when opens next summer.
Verrückt features a drop so steep it appears to plummet almost at a right angle.
Adrenaline junkies climb the huge number of steps before waiting at the top on a deck made from railroad tanker cars.
Its exact height has not yet been revealed, but it will have to be higher than 134.5ft to beat the current record of the 'Insano' slide in Fortaleza, Brazil.
It is thought that riders will plummet around 130ft before being rocketed up again another five storeys over a hump and down into the pool below.
[VIDEO: Teen diver gets 'seal of approval' from friendly creature]
Larry Pitcher, the park's director of marketing and sales, told The Kansas City Star: 'We have always been family friendly, but this will attract those adrenaline junkies who are always looking or that next biggest, coolest thrill.'
The rafts will drop more than 130ft before being sent up another five-storey tall hump and then down again into the pool.
He added: 'At Schlitterbahn we love rides that encourage people to share the experience. Besides it’s more fun if someone is screaming in your ear.'
The potentially record-breaking ride is being built at the Schlitterbahn waterpark in Kansas City.
[PICS: Spectacular Comet ISON wows astrologers the world over]
The park is already famous in the waterslide world for having the first ever 'uphill' water slide.
Schlitterbahn co-owner Jeff Henry said 'Verrückt' could be a 'game changer' for the industry.
