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Six Flags Great America's most intense customers will attend an event Saturday that's a prelude to a national convention planned at the Gurnee park in 2005.
About 165 American Coaster Enthusiasts will have two rides all to themselves from 9 a.m. until it opens to the public at 10 a.m. Saturday.
Group members will get to overdose on Superman - Ultimate Flight and Batman The Ride.
Six Flags spokeswoman Susan Storey said it'll be the...