To me the most impressive thing about these interviews is the fact that he gives these brilliant answers to your questions while he’s driving, or just came back from somewhere, or getting ready to go somewhere. As far as I know, he never knows what you’re going to ask him ahead of time, he just has a great understanding of the big picture, and can address any subject thrown at him.
It’s great. He’s also happy to tell you when he doesn’t know something, instead of pulling it out of his rear end.