I have the Oakley Square Wire with their polarized black iridium (mirror) lenses. I keep this on me all the time since it's mostly sunny in Southern California. I love the shape of these b/c they suit my face shape best.
Just like any polarized lens, there will be some angles that make it harder to see a digital display, like your phone or the infotainment system. As said above, it doesn't black out the infotainment screen, at least in an angle you'd probably be in when driving. You'll tend to see rainbows on digital displays, again depending on angles, and that can decrease legibility. If you have tinted windows (idk if it's just ceramic tint), you'll see some rainbows as well.
I have some cheap $15 drug store sunglasses that are also polarized, and I keep those in the sunglass holder of the car as a backup. The tint level is a bit darker than the Oakley, but otherwise, the experience of polarized lenses is the same.
I haven't tried non-polarized sunglasses while in a car yet. I think when my Oakley dies, I'll give a non-polarized pair a shot. It might just be better as we see more digital displays.
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