Today, I ran over and killed some sort of mammal with my car. It darted out from the side of the road and went under the side of my car. I only got a glimpse out of the corner of my eye. I didn’t get a chance to do anything before it went under my tire. I think it was a possum. I only remember killing a mammal once before, a raccoon at night when I was in high school. A sad occurrence. A side affect of our popular mode of transportation.