The scene starts off with a closeup of Wilson and House on their motorcycles and then zooms away and flies through the sky, without any cuts, with the 2 always in view. It is true that the initial closeup seems to jitter a little (as if taken at high zoom from far away), but overall the shot has a very high quality and stability throughout.
Was it taken form some aerial device like a helicopter or UAV? I think a crane is out of the question, due to the amplitude of the movement, and I seriously doubt it is a CGI shot, so how did they pull it off with such high quality and stability?