Originally posted by: Gaffer Tape
Yeah, I think that is pretty well done, but it has a few things going for it. It's rainy, and it's only visible for a split second. Too fast for anyone to really catch. I had no idea it was CG until I watched the documentary.

Well, ok, it's a fast shot, but if it was not well done, a split second would suffice to notice it IMO.
And it's sur that rain helps for hiding the details, like for the T-Rex in Jurassic Park, but in this particular shot, it doesn't help that much. Wet clothes is a real nightmare in CGI! But they did it very well.