Melizerd
New member
I'm sorry I don't remember who posted asking about them. I just saw this one that knows to darken or lighten depending on the sunshine. That way it wouldn't hinder your view at night. I hope this helps, again I'm sorry I can't remember who it was. Although it seems if you have any tint on your window they don't work well. I don't know if most rear windows have tint or not. Thought it was worth a look for you.
http://www.onestepahead.com/catalog/search.jsp?N=0&Nty=1&Ntk=Def&Ntx=mode matchpartialmax&Ntt=12443
http://www.onestepahead.com/catalog/search.jsp?N=0&Nty=1&Ntk=Def&Ntx=mode matchpartialmax&Ntt=12443