OP, obviously lots of advice here, most of it going one way. The only thing I would add is just this: most of us are older than you, have been where you are and are speaking from experience. If nothing else, maybe see if that resonates with you. There's more than the surface arithmatic or what car is best, etc. here. There's a lot of hard-earned wisdom from most of us who have been dumb students and wish we could go back and change things.
For many more reasons than the car, I would sell everything and move within a ten-minute walk of campus - TODAY. Every university has a student area with tons of apartments needing roomies. Get your butt to campus and just live the university experience. Money aside, you'll get so much out of that more than you'll get out of living at home, commuting and working when you could be spending 18 waking hours studying, hanging out drinking coffee and chasing girls. You'll never have that again, but you will have cars, commutes, jobs and responsibilities which make your current ones seem like nothing.
Oh, and you don't need a car, let alone a brand new one. That's just crazy talk. If you insist on disregarding what everyone is telling you, then at least buy yourself a used civic or corolla that costs no more than $3000, cash. It will get you through college and into your first job. That just a few short years away.
Good luck.
