And then when I walked up to it, I found that I hadn't just left the lights on, but I had, in fact, left the keys in the ignition and the car running for the entire two hours. Argh. Good thing we live in a quiet neighborhood, and that the car didn't run out of gas. But I think the real lesson of this is the following:
I am TIRED, people.
I think I'm going to cancel my meeting on campus tomorrow and exercise the option to work from home, because if I don't get some serious rest soon, anything might happen. And not in a good way.