The Key Mystery

Last winter, during a snow storm, I dropped this set of keys to my daughter's car while carrying in groceries. I never found them, even after the snow melted some days later. In the spring I searched for them again with no luck. This morning, they inexplicably showed up like they are shown in this picture. I'm assuming someone found them, knew it was a Honda, and saw the car. Thank God they were honest, they could have just driven away with them.