[MAC]

So recently I've been driving my grandpa's Lexus...and I noticed a "Mirror" button on the rear view mirror. I didn't really know what it was until last night when a bunch of light was shining in from behind the car;
I pushed the button and the light got brighter.
Why? - because the tint on the side, and rear view mirrors faded away after I clicked the button.

This may be an extremely old innovation but I've never come across it.
I find it to be rather intriguing...why isn't this sorta device placed on windows as well?...I don't really understand how it works but it's rather amazing to be able to click a button, and have the mirrors tint, or untint, at your command...

Altho it's probably expensive as hell eh?...
it's not a bad tint either its actually rather effective, except at night when the slightest bit of light makes the mirrors dim and you can't see anything behind you..

I suppose I should have put this under another section but too late now I guess...But I was thinking it'd be an interesting thing to have on the camaro..assuming it isn't TOO expensive...I have no clue tho..but seeing as how it's on a Lexus I'd guess it is..