I love my CU because they handle everything remotely, rate lock me when I ask, don't always bother me about income verification, etc. They just ask me for a VIN#, run my credit, and then wire funds after talking to the dealer finance guy for the total owed. Super easy and no stress to deal with. I handle 90% of it by email.
We financed the Nissan through the CU that has our mortgage. Their part of it was incredibly easy. The car's sale price was 1/2 of what they estimated the value at. Credit Score was > 800. All they needed was a purchase agreement with the VIN and mileage ... the dealers were being real stupid