I just got off the phone with PenFed. I talked with them about their "payment saver loan" Essentially this loan is like a lease, but you own the car, and at the end of the term (up to 60 months) you simply pay the residual (either buy paying outright, refinancing, or selling the car). For those of us who would like to buy, but are looking at leasing to spread the capital expenditure out, this might be a good option (especially since the rate for this loan is 1.74%). Even more surprisingly, the rep that I talked to on the phone had actually heard of the Model S, and said "that thing is faster than gas powered cars!" in an excited voice.
The bad news is that right now, they will not do this loan on a Model S, as there is not a NADA listed residual value for it. They told me that if NADA list a residual for the Model S, they would be happy to do this type of loan on it. Hopefully NADA will list the Model S soon so that this loan is an option to us. In the absence on a Lease option from Tesla, this loan might be the best choice for some of us.