A friend and instructor of mine worked heavily on that film. I will ask him.
As for my own experience I have seen sketchup used on big budget films, games and TV spots. There are people in this industry using SU for some AMAZING design work, pushing its limits much farther than I thought possible. From sets to vehicles and other crazy things. I wish i could say exactly what, but I don't want some lame hollywood lawyer after me.
If you want to see raw SU models in use, check out the book 'Art of Mass Effect.' Also, many times in this industry, a sketchup model is used as an underlay for a painting/photocomp or sketch. So it is tough to make out.
As for my own experience I use SU heavily in my conceptual work, along side my Art Director who is a LightWave master. SU/Vray combo produces results that are definitely comparable. With that said, if Google only made ONE upgrade for SU7 i would vote for high poly support. It is extremely difficult to bring in elements modeled in LW without SU simply bogging, even with polyreduce. If SU7 could support high poly models it would become a seamless part of the industry.