A woman gets her finger fucked from the car window by a male stranger

At night, a man and his wife are on a trip. They had pulled over to the side of the road when their wife, dressed in a knee-high stocking, began to stroke her body softly as she became horny. Another man notices this and approaches her. The eager stranger reaches through the car window and brushes his palms across her thighs. Nothing is done by the husband. The husband joins the man in sexually stroking and fingering his wife from the driver's seat.