What happened to the man clinging to the back of a fast-moving car?

North Carolina drivers were surprised to see a man clinging to the back of a car going 60 mph on a freeway yesterday. One family shot a video of the incident. "The family says they saw the man on the back of the car break the back windshield and climb inside. They say a woman was driving the car with a child in a car seat inside." No one knows what happened to the car or its passengers. (Via Arbroath)