Who said RC planes are for kids?

Like some others have already said, I'm confused as to how this plane is controlled when flying at those speeds. I'm under the impression that there may be a camera that feeds video to the controller; I wouldn't spend that much time and money on building something like that only to have myself guess on what direction to turn, etc.

I think there are some other vidoes on youtube and probably some google searches on it. It is quite amazing though