Ladies and Gentlemen, We've Got a Jumper

There's one thing that has boggled my mind for some time now. Every now and then, when you're driving, you'll see a lonely shoe just lying on the side of the road. What is it doing there? How did it get there?
My theory is that you are just driving along and all of the sudden one shoe decides it's had enough of your stepping all over it and takes a leap out the window. All of these shoes are committing shoeicide. And they don't even realize that their mate will NEVER be able to go out again. Sad.
The moral of the story is that you should always treat your shoes well because you never know when one might turn on you and decide to jump.