Many years ago, Sexy Nerd and I took a little summer road trip to visit his family in Colorado. He was driving, I was sleeping, and all of a sudden we heard a *THUD!* It's not exactly the kind of sound you want to encounter when going 75mph, but nothing seemed to be wrong with the car and we didn't see anything in the rearview mirror. We continued down the road.
It wasn't until we stopped for gas that we realized what had happened.