IN MY CAR!!!!!!
I don't know how these could have gotten in the car, either, but at least they are little, so I don't have some major hole somewhere.
I would have preferred the marder, because at least there is some type of repellent. I've been told that traps are what I need to get rid of the mice. Ugh. I've considered putting one or both of our pets in the car for the night and seeing if that eliminates the problem. For the time being, I will be driving Allen's car.