LifestyleGerman Engineer Werner StengelTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoLifestyle10/06/2012October 6, 2012German engineer Werner Stengel has designed over six hundred roller coasters over the years and four of them are pulling in the crowds at Munich's Oktoberfest.https://p.dw.com/p/16JTZAdvertisement