My 6 brothers and sisters and I did not have cars in high school. My father read somewhere that student's grades suffered if they were allowed to drive. The only driving I did before graduation was during driver training. I wanted a car so bad I graduated early. Once I found out it was possible I changed my major from science to general, because a general major only required 150 credits compared to 170 for science. I took summer classes and weekend classes to get the credits.
Saved money I made as a dishwasher and bought a Ford Galaxie for $850. Had to finance part of it.
We rarely drove the parent's cars. My oldest brother borrowed Dad's Buick when he was home from the Air Force on leave. He tossed a cigarette out and it went into the back seat and caught fire later in the garage. Just burned the back seat and insurance paid to fix it but it smelled like fire. The next time he was on leave he drove it again and ran into the garage wall and caved in the passenger door.