A Florida man started his car up in Port St. Lucie with his dog in the back seat. The man forgot something, so he ran back into the house. While in the house, the black lab decided to experiment and put the car into reverse. The car began to go into circles in the cul-de-sac for about an hour. Fortunately, only a mailbox was damaged before the driver was able to jump into the vehicle and stop the car. Never leave an animal in a running car and never leave an animal in a car with the windows all the way up.