Quote:
Originally Posted by Mister-B
I guess a downfall, is that the day/night feature doesn't work? I actually use that.
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That's what the glass company was talking about. It doesn't have to do with the pattern of the glass, but the way the glass is made. The glass in a rear-view mirror is prismatic; it allows you to have a reflection from two (or more) different angles. The primary direction gives full reflection, and the secondary reflection is partial.
As far as I can tell, the law (federal, at least) doesn't require the prismatic feature, but it sure is nice to have.