Which company opened an amusement park in 1976 which had a roller coaster dismantled in 1988?
Whizzer (roller coaster):  Marriott continued to operate both parks until selling them in 1984. Whizzer (roller coaster):  Manufactured by Anton Schwarzkopf of Germany, the two rides were the last “Speedracer” models ever built. Six Flags Great America: Six Flags Great America is a Six Flags amusement park located at Gurnee, Illinois, in the Chicago metropolitan area. Six Flags Great America:  It first opened in 1976 as Marriott's Great America.
i don't know