Kings Island, Ohio, USA
Banshee, the world's longest, fastest B&M Inverted roller coaster has begun testing. A photo was tweeted earlier from the parks official Twitter, showing a train completing the interlocking vertical loop, through which the lift hill travels.
[Update] - More photos have been posted of the Banshee test run. Visit the CF Forum Discussion to view.
[Update 2] - A brief video has been released of the first drop and loop testing.