Just got off the phone with RBFCU. They're sending the money to Tesla overnight today! Thanks again to @ummgood and others who helped spell out the process.
One thing to note, when on the phone with RBFCU, they initially said that they don't overnight the check, and if I wanted to do so, I'd have to pay the ($40) fee. I said I would do that, but needed to add more money to my account. Before I could get over to the branch, the loan person called back and said that for Tesla, they do send overnight, and they pay the cost. Something to keep in mind. Also, in addition to their really competitive loan rate, their customer service so far has been top notch. I'd definitely recommend them.
One thing to note, when on the phone with RBFCU, they initially said that they don't overnight the check, and if I wanted to do so, I'd have to pay the ($40) fee. I said I would do that, but needed to add more money to my account. Before I could get over to the branch, the loan person called back and said that for Tesla, they do send overnight, and they pay the cost. Something to keep in mind. Also, in addition to their really competitive loan rate, their customer service so far has been top notch. I'd definitely recommend them.