Final answer:
The person pulled over by Utah police to buy a Lamborghini with $3 was a young Utah boy, while the provided passage actually describes an unrelated scenario of a man named Peter experiencing road rage.
Step-by-step explanation:
The person who was pulled over by Utah police while driving his parent's car with the intention of buying a Lamborghini with just $3 in his pocket was a young boy from Utah. However, the scenario you've mentioned with Peter getting stuck behind a slow car and acting aggressively doesn't appear linked to the Lamborghini story. Instead, it illustrates a case of road rage or impatience with what Peter perceives as 'DWE' or 'driving while elderly', which is not an actual offense but a prejudicial term used by the character Peter in the scenario.