Just got home. Flatted on the way home--the tire was flat yesterday but I filled it and it held air overnight. I should have known better than to be lazy. Instead of changing a tire this morning in the (relative) cool of my garage with a floor pump and soap to clean up, I changed it in a gas station parking lot in the heat after pulling over in the middle of heavy traffic, having to use a frame pump and wipe down with the extra shirt I was bringing home from work. It's official. I'm an idiot.