Any decent credit union should give you a loan, you will just suffer with a higher interest rate (9-15%+). Keep shopping around and you should be able to find something. I was able to get $11k when I was 18 with zero history, virtually no credit, and no cosigner. The kicker was my first loan was 11% interest...
P.S....buy a cheap moped or something just to ride around local. At least you aren't walking unless you prefer a bicycle.
After that first loan, I have bought over a dozen new cars and bikes in the last 10-years with zero issues (low interest and perfect credit score)...