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Do you ever do that thing when youapos;re tired, when you find yourself just staring into the distance?

I tend to do it a lot while driving home from work. Knowing that this isnapos;t the safest of things, Iapos;d break my staring by trying to figure out what I was staring at. My eyes are resting on something, even if theyapos;re not registering.

I discovered that I stare at horizontal lines. The bumper of a car, the arm of a traffic light, the edge of a roof. Anything that is horizontal.

Anybody else ever notice this? What do you tend to stare at?
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