Work your butt off to make your grades massively impressive. Volunteer somewhere that will give you further points for a scholarship. A job and car is great, but at most colleges you won't need a car. Prioritize if you can to make the most of the rest of your free education.
In my home state, one can attend college while going to HS and you don't need to pay tuition, just books.
In Qatar, where I live now(no KH's, btw, and evangelizing is illegal) they offer scholarships through the colleges and Qatar Foundation. If you can get accepted to the college, you can get interest free educational loan, PLUS, if you stay in Qatar and work for 4 years after graduation, you don't have to pay it back at all. Pretty good deal. Check out Qatar Foundation. Nothing like college in another country several time zones away to get you out from under your parents supervision:) Education city has major US universities including TAMU, VCU, Weill Cornell, Carnegie Mellon, Georgetown, and Northwestern(!). Not a exciting uni experience, but if you want an education, you might well be able to get it here, cheap(if you stay on after or get a scholarship.
http://www.msnbc.msn.com/id/6870667/)