On January 12, 2002 Arrow Dynamics opened X, the world’s first 4th Dimension roller coaster, at Six Flags Magic Mountain in California, USA, which independently flipped rider seats throughout the course of the ride. X would turn out to be plagued with mechanical problems, so much that it led to Arrow Dynamics’ ultimate bankruptcy; however S&S Power would continue support for the ride and its eventual reincarnation as X2, which featured lighter, more reliable trains and added multi-sensory effects.