Extreme skater, Dirk Auer (36) is crazy for a special kind of acceleration power contest. He´s keen on experiencing a night run on inline skates with two jet-turbines on his back. For this mission Auer buckles two modified Jetcat turbines (valued at 9000 Euro) on his back. Usually, these jet engines are assembled at military compounds. Each turbine produces up to 113,000 revolutions per minute, and reaches 250 Newtonmeters, 100 PS, at full thrust. He was very surprised that his brake system on his skates produces so many sparks.