well... i think you can animate objects with plugins like SketchyPhysics and i think you can render SketchyPhysics' animations with other renderers like Thea or Twilight i've never seen anyone render that kind of animations with Vray, but im a basic Vray user, so i dont know good luck, i guess some of the more experienced guys in this forum may have a better advice

@gilead said: it´s hard to explain. Ok. Thanks. I think I understand. I don't know about any viewer like you described.

We tested a solution shortly. We combined SketchUp & LightUp and made the walk through with edddison. Please read a tut how to do http://edddison.com/improve-quality-sketchup-lightup-walkthrough-edddison/ Thomas

really cool, thanks!