The boy had left home in his mother’s SUV after an argument in which his mother said she would not buy him a lamborghini, police said on Twitter.
A Utah Highway Police officer said that he witnessed the vehicle weaving on Interstate 15 at around 30 mph, and believed the driver had been impaired when initiating the 5-year-old to stop.
“How old are you? You’re 5 years old?” Utah Highway Police Trooper Rick Morgan says in dash camera footage of the encounter. “Wow ... Where did you learn to drive a car?”
Mr Morgan later told KSL-TV that he had to assist the boy with parking the SUV on the side of the freeway.
“He was sitting on the front edge of the seat so that he could reach the brake pedal to keep the car stopped while I was standing there,” said the trooper.
The child told the trooper that he had planned on driving to California – a trip of almost 800 miles from his home in Ogden, Utah – to buy a Lamborghini for himself. Once he was pulled over, the child told the trooper he had intended to drive to California to purchase a Lamborghini for himself.
“He might have been short on the purchase amount, as he only had $3 dollars in his wallet,” added police in a tweet.
The starting price for a new Lamborghini is around $200,000 (£161,000).
Mr Morgan added that nobody was hurt in the incident, and that a local prosecutor would decide whether to file charges against the parents, who were out whilst the 5-year-old was cared for by his siblings.
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