PenFed is a credit union out of PA. I believe they service the entire US, though. You have to 'join the credit union', which basically means you fill out a form and deposit $5.
At the time I bought my car I got 1.74% APR for 60 Months. I just got an e-mail that they are offering .99% APR. They finance 100%.
https://www.penfed.org/PenFed-Car-Bu...387&adcode=401
Best,
Mike