A police officer in the western US state of Utah was stunned after stopping what he thought was an impaired driver on a highway only to find a 5-year-old behind the wheel. The Utah Highway Patrol says the boy told the trooper who pulled him over on Monday that he left home, with only three dollars in his wallet, following an argument with his mother who had refused to buy him a Lamborghini. In a dash-cam video of the incident released by the department, the SUV the boy was driving is seen weaving across the freeway as other vehicles and trucks speed by. The car then pulls over to the left side of the highway after the trooper activates his siren.