The Rollglider is a type of a thrill amusement ride that has a steel pipe track designed with turns, dips and loops, using gravity-propelled trolleys to slide down the track. 1970s Roll-O-Plane: 1940s Rotor: The Rotor is an amusement ride designed and patented by German engineer Ernst Hoffmeister in 1948. The ride was first demonstrated at ... More @Wikipedia
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