is an S&S Worldwide roller coaster, formerly known as, located at Fuji-Q Highland in Fujiyoshida, Yamanashi, Japan. The ride uses compressed air to launch its trains. This steel roller coaster made its debut on 21 December 2001, making headlines when it broke two records. On opening, it claimed the records of fastest roller coaster in the world, previously shared by Superman: The Escape and Tower of Terror. and the fastest acceleration in the world, with an acceleration from 0 to 180 km/h in 1.56 seconds. This record previously held by another S&S Worldwide creation, Hypersonic XLC. Steel fabrication was provided by Intermountain Lift, Inc.Speed and AccelerationThe 55 second ride takes the rider across of steel tracks, and peaks at a maximum height of 49 metres. Reaching top speeds of 112 mph, Dodonpa retained the title of world's fastest roller coaster for nearly a year and a half before Cedar Point's Top Thrill Dragster took it in May 2003. Previous to Dodonpa, only two other roller coasters had broken the 100 mph barrier; today, that number has risen to seven (including Dodonpa).As for its main attraction, Dodonpa's accelerates from 0 km/h to its maximum speed, 180 km/h, in 1.6 seconds, giving it an acceleration of 32 m/s2 (87.2 ft/sec2), and up to 3.3 G's. By comparison, astronauts only experience 3 G's at liftoff, though for a substantially longer time than 1.6 seconds.