Hi, i have to agree with you about the car windows we to have wind down ones so the dogs can get more air when needed, but i meant your dog would have to be cut which means stiches i would think, and not nice for her at all, but everybody to their own , my dogs never muffed when the chips were put in or my cats, i also think you will have a prob finding a vet who would do it, this is just my own thoughts , you must do what you think is right for your dog,