IMO Timberliners are still in the experimental stages. I have read that HW has sold 2 of the 3 PTC trains. I wonder if they are gone yet or if there is a contingency involving the TL being satisfactory. I imagine that TGG will be making up a test train as soon as the Voyage trains are checked out. I could see this test train going around during the off season of 2010-2011 and could start seeing these on other coasters by 2012.

I read that Gwazi tested some Millennium Flyer trains recently at BGT. I also read that they are already gone.

And...Gwazi?

Holiday World?

Son of Beast?

Not every new product succeeds...

A park in Norway known as TusenFryd will be adding a pair to a Vekoma designed wooden coaster known as Thundercoaster. So far, they've only been added to small coasters with some success and the rather large Hades which hasn't helped. We'll see how they help a medium size woodie.

http://rcdb.com/1042.htm