It turns out that people who are very interested in cars recognize cars with the same brain circuitry that they use to recognize faces. In simple lab tests, people who know cars very well had a _harder_ time recognizing isolated pieces of cars (they process wholes, as everyone does with faces). And their recognition process slowed down when they were shown "an image consisting of parts of both faces and cars", suggesting overloaded circuitry.

I wonder what else lies along this route.

I would like to know why blue jeans match with everything. I think it's because they're the color of the sky.

http://www.newscientist.com/news/news.jsp?id=ns99993479