It seems you're situation isn't a lot different than mine. My parents split up right after I turned 15 and the divorce was final a week after my 16th birthday so this car thing was a big issue because my mom didn't make much money at all and was giving my Dad the "you're leaving me with all this" crap... so my dad only actually bought my 1st car.
Maybe some of you will think I am part of this whole lazy ass generation, but if the kid is playing full-time sports with the ability to get a full-ride scholarship (aka no school debt for parents OR student), then he needs to attempt that. That will be much better for him in the long run than a minimum wage weekend job (IF HE STUCK WITH IT)....... I played two years at a junior college (inexpensive) but my last 2 years were played at a private chistian college with about $15k a year in tuition (tuition ONLY) and I graduated without a penny of school debt, nor did my dad pay a penny.
I went to school, practiced from after school until about 5 o'clock every day and played games on the weekends.. At some point homework has to come in and, how I feel, somewhat of a social life... I dont know if his son does well in school but I made sure to bust my butt and got me GPA up high enough that I also got a Tennesse academic scholarship that gave like $5k a year to tuition....
At the end of the day, yes my dad gave me a car, granted this was in 2006 and it was a 94 Thunderbird for $3500.... so it's not like I was given anything new and hip ( BUT IT WAS ALWAYS THE CLEANEST CAR IN THE HIGH SCHOOL PARKING LOT)
It seems the only different between our situation is the drive of the child. I wanted to find a resolution for everything rather than just play the quiet game with my dad.