First thoughts that came to mind was for you to persue getting an established credit rating, if you went to a buy here pay here dealer you would most likely have been able to secure a loan for the amount, but at interest rates that would keep you in a deep hole for a long time to come.

I don't fully understand your situation, but if you leave a phone number along with best time to call at my email address, then if there is an answer to solve your question I will know after asking you a few questions.