No, no, waiting is good! And so is a car (my broke ass could use one atm

)
What I am suggesting is that she (being a girl in high school) is acting on little whims of fancy and pulling you along a bit... I know you are "best" friends, which is really great, but is just sounds like she is either ignorant of your feelings towards her (though you did say you have brought them up) or just oblivious and still drags you around and tramples on your emotions...
This forum is not a place to get in arguements... I know when I write, I am just speaking my mind; I know that is exactly what I would want from others if I were blinded by being in a situation; you'd be surprised what other people can see from outside without the emotions and background you have
If things are going nowhere, why stay in the car? Now, I think it's wonderful that you are good friends, I really do, but if you want somehting more and she doesn't... that poses a very dangerous problem. You will be amazed at how your life can really waste away chasing this dream and being dragged through God knows what as you sit idly by and watch as someone you cares for disregards your feelings... I am just saying be cautious; don't want to see you getting really hurt, and this situation has a lot of pain potential.
Like I said earlier though (and, like everything, this is totally up to you and open to suggestions and constructive criticisms...) I think you should tell her that you have deeper feelings that friendship for her and that it's hard to see clearly because she doesn't share those feelings, so maybe a bit of time off from her would be a great help... at least I can't see any good coming out of you being close to someone, and just wanting more than anything to be closer, but constantly being reminded that you can't have what you want, which will make you want it evern more... vicious cycle my friend... been there

Didn't mean to offend you at all or say anything was "BS" Just speaking my mind and throwing out some thoughts! Let us know how things go...