Well, it's the world's first 4D as much as the TA2K at the S&S plant in Utah was the world first air launched coaster. I don't know if Hoei Sangyu sold their prototype. Information on the coasters is REALLY hard to come by over here!
Here's a pic of it operating: http://www.hoei-sangyo.co.jp/e_infomation.html
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- Peabody
