No, SFNE Guy, there are 2 Mr. Freezes(Premier "Diving LIM Shuttle Loop" model). Another Premier shuttle, Batman & Robin: The Chiller is at SFGAd. (Premier's "Dueling LIM Shuttle Loop" model)
Are they any good? - That's a matter of opinion, but it's not many people's favorite, unless you enjoy a good head bashing. (PLEASE let them change the trains to lap bars only!)
Will there be more - Maybe, but I doubt Six Flags will purchase any more. They (and Chiller) opened a year late, went WAY over budget, and aren't exactly friendly to the mechanics. I remember plenty of not so nice things said about Chiller from supervisors during a behind the scenes tour. I wouldn't consider any of the 3 to be a rousing success for their respective parks, and I think SF is now often building respectively priced coasters that are more likable to the GP, and get more repeat riders, rather than Premier Shuttles. (Now that I think about it, SF still hasn't gotten away from buying multiple first of a kind coasters that are troublesome and open much, MUCH later than hoped ;) )
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- Peabody