Here are some pics from the back and one looking through rear view mirror and one from side so you can consider the arc of coverage. Not sure if you have kids or adults riding in the back. When I get in the back my head rubs the shade. Not killer but cozy, and I'm 5' 6". I'm in the garage so lighting would be better outside. Hope these help.
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Also, looking at it I was thinking you could fold the very back up as much as you like to avoid it coming so far down. They're very adaptable as you know.