Roller-coaster - man skates ricketty death-plunge

Check out this guy, who fabricated a pair of inline skates for the purpose of skating the track on an enormous wooden roller coaster.

When you take adrenaline junkies and mix them with technology, great things usually happen. They don't apply technology to satisfy a craving for intellectual discovery. They do it to test the edge of physical endurance, effectively a form of high physical-intellect.

He said that had a nail been poking out slightly from any part of the track at his top speed (90kph), he'd have been toast.