After driving to work I realized that I've passed from being tired to a new level. I can't call it exhaustion; I guess you could label it drained. I don't feel tired, really, but I can see I don't have all my attention.

Examples: I hit this T-end intersection, and am waiting to turn right. There is a guy in front of me. If you look left you can see that there is no one, as far as the eye can see, and that is really really far. So I stomp on the gas and look ahead, only to find that the guy in front of me is standing still, thinking about making the turn. So I stomp on the brake. Whew.

Later, I didn't see a red light. I didn't see a guy on a bike. Luckily my passenger cried out, and I stopped before doing any damage.