4s will send their appraisers to appraise your car and tell you how much you can get for it. If you decide to replace it, it will be directly deducted from the car you like (that is, the car you are optimistic about now is 15w, and the car you are driving can be replaced by 3w, so if you pay it off at one time, the price of the bare car will become 15-3 = 65438+.

As for the license plate, this should not be done. The current policy is to have one license plate for each car. Of course, whether my dad is Li Gang or a strong michel platini is another matter.