A couple of comments. I financed mine through Honda. Honda's rate was a little higher than my credit union, but they offered me a $750 down payment assistance if I used their financing. It might be something to ask your dealer. When my account info finally arrives (just bought the car Nov 4) I'll check to see if I can pay the Honda loan off early and refinance with my credit union.
Also, Willie, your scenario is no way accurate. For example, a $20k loan at 5% for 60 months, your total finance charge is only $2,645.48. Nowhere near double the price of the car. In fact, considering your scenario again, it might actually be cheaper to buy the car now and eat the $2600 in financing or risk the sticker price increasing (or more likely, the value of a dollar decreasing) over the next 3 years while you're saving, making waiting a more expensive option. Just a thought...