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The OP did not say what kind of cars they have. It is possible to have 2 cars with memory seats and mirrors. Now if only we could get memory rear view mirrors on the same cars as memory seats. Oh and seatbelt height adjustment memory.
Camera rear views allow this, common in a lot of trucks, they use the backup camera and feed it through a screen where the mirror is.
Both of my cars set the outside mirrors when they set the seats (one by which phone unlocked it, the other by a driver 1/2 button)
But I find I change the centre mirror every time I get in the car, maybe even more than that as I often adjust it while I’m driving