It's happened to the best of us. You leave the house in a rush and inadvertently leave your cup atop your car or, in one woman's case, the back bumper.
Fortunately for the SUV driver, a trailing motorcycle rider took it upon himself to return the coffee cup -- while moving. In a video of the courtesy, a motorcyclist saves a cup from the woman's rear bumper. He then speeds up to catch her attention so he can return the full coffee mug on the fly.
Watch the first-person video of the coffee cup rescue above, and see other random acts of kindness in the gallery below.