Dirk Auer skates down 860 metre roller coaster in just 60 seconds... jump more watch it in action! "An adrenaline junkie has taken in-line skating to new heights and set a new world record after racing down a roller coaster at speeds of 56mph. Dirk Auer decided to go where no sane man or woman had gone before and skated down an 860 metre track in just over a minute. Wearing specially designed in-line skates, the German made the attempt on the Mammoth roller coaster at the Trips Drill theme park in Stuttgart... "The roller caster is wooden and so unlike rides made from iron and steel there was always a chance of the odd nail or screw that would not be entirely flat. If the skates were to catch a stray nail then I could have fallen and I would almost certainly have died. " 36-year-old Dirk Auer said.