Your first car.
My first car was given to me by the Manager of the finance co that financed all my Father's used car lot cars. It was a 46 Ford 4dr which had bad bearings. I spent $39 on it sold it for $50 and immediately bought a slick 48 Ford Coupe for $200. It just grew from there. Since my Father owned a used car lot it was easy for me to buy wholesale drive them for a while and sell retail. By the time I left home after college I had had 35 cars. My senior yr of hi school I was driving a one yr old car that was paid for, a 56 Ford Customline Hardtop. There were not many of those I've only seen 2 in my life counting mine. Many, many stories about bought and sold cars.