The amount I got for M2 not only paid off my existing loan but also went towards a significant portion of my downpayment for the new M2. So my initial capital outlay for the new car wasn't that much after all. What I did pay for was a reduction of the loan I would be taking from the bank so that my monthly installment for the new car is just a little lower than what I am currently paying.
Ok. Too much math. But it does show that it's a lot easier to buy a car when you already have a car.