My truck doesn’t have one of these, but seems like I’m in a small minority there. Mirror mounted just above the passenger’s side window, pointed down and in. What are these for? Just to help tell if there’s a car right next to you? I can see a vehicle there in my convex or hood mirrors. Not that more visibility isn’t better, but the angle they’re set at seems like it’d largely just be looking back in the window. So, what’s up with these?

