Worlds of Fun in Kansas City has Interlocking loops, especially made for the park. The coaster just celebrated it's 20th anniversary at the park on April 4. It is a great ride. This past summer in July, it experienced a derailment just before entering the station. There where some injuries, and some girls had to hang upsidedown for 4 hours while firemen got them out. The ride was closed for the rest of the season. The park opened up today, and so did the coaster!!