Dueling Dragons Roller Coaster

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, two of which bring riders' feet within several inches of riders on the other train. The ride was constructed by Bolliger & Mabillard of Switzerland. The Dueling Dragons coasters reach speeds between 55-65mph and get within 18 inches of each other at three points during the ride. Each dragon's 2 and a half minute flight includes a total of 5 inversions, including a zero-g roll, a Cobra roll, two corkscrews, and two vertical loops.

More info at  en.wikipedia.org