I have seen the Auto Dimming Rear view mirror; heck had one on my Dakota. Didn't get the light group package on my new truck, don't really mind flipping the little lever.
However, as much as I love the huge view the side towing mirrors they also give me a wonderful view of the headlights of every car around me.
I remember my family having a Dodge Caravan with auto dimming side mirrors. I was wondering if anyone had seen anything like that for our trucks.

 

I doubt there's anything out there right now. If you take a look at the way a rearview glass is made you'll see why they don't make them. I have the side windows tinted so it's not so bad.