We have "Dueling Dragons" at Islands of Adventure (Universal-Orlando).
Dueling Dragons is a pair of dueling roller coasters at Universal Studios' Islands of Adventure. The ride is the only dueling inverted roller coaster in the world. The ride is themed to two dragons, one side being Fire and the other Ice. It features a layout in which the two trains share adjacent lift hills, but then traverse two completely unique courses. The ride features three near misses between the two trains, which bring riders' feet within several inches of riders on the other train. The ride was constructed by Bolliger & Mabillard of Switzerland. The Fire Dragon reaches a top speed of 60 mph and the Ice Dragon reaches a top speed of 55 mph. At three points during the ride the Dueling Dragons coasters get within 12 inches of each other . Both dragons have a two minute and twenty-five second ride duration. Fire has 5 inversions, including two Immelmann's, a vertical loop, and two corkscrews. One Immelmann is special; it is a new type of loop. It's called Wrap-Round Immelmann.[1] Ice has 5 inversions, including a zero-g roll, cobra roll, vertical loop, and corkscrew.