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at Six Flags Great America* · Gurnee · United States
Steel coaster at Six Flags Great America in Gurnee, Illinois, opened 1976 (as Willard's Whizzer). Built by Anton Schwarzkopf using his Speedracer / Jumbo Jet model. 70 feet tall, top speed 42 mph. An American Coaster Enthusiasts Coaster Landmark and one of the park's original opening-day attractions.