The water jet pack is officially the greatest thing ever. For only sixty eight grand you can own your very own water thrusting jetpack. It can lift you up to 30 feet high and thrust forward at 30 miles per hour - practically guaranteeing certain death.
The Quadski is a four wheeler that transforms into a super fast jetski!
Extreme inline skating on roller coaster tracks. Dirk Auer, pictured above, is an extreme inline skater who already holds the world speed record for skating, achieving a top speed of 190mph while being dragged behind a Porsche GT2. The ride itself took just over a minute with Auer reaching a top speed of 56mph after the first 30 meter drop.