The article found here tells all about it.
http://www.wired.com/wired/archive/9.03/rollercoaster.html Excelent read. Their next coaster will go 107 mph in under 4 seconds, but it's in Asia, we'll eventually get the bigger version. And they're going to build a parachute type of drop ride that goes up 300 feet, inverts the riders, then drops. Can't wait, I'm there!