I just heard Peter Jackson talking about this, and it sounded pretty cool. He said the trolley would be on the motion platform and it would be surround by something like 16 screens, all at (I want to say 8K resolution, but that's pretty hard to imagine) with wind and "spit" generators, etc. and the V-Rex's biting the trolley and so forth.
Was it all that, or was Jackson talking about what he wanted to do and not what actually got made?