RE ".... get a mirror on my trunk that I can adjust the angle of from inside the cabin to reflect back high-beams at the driver. ...." I had this idea too this annoyance too - but never implemented it.
One way to implement would be to mount a thin object , like a toothpick thickness and 1 or 2 cm long say on the mirror 90 degrees vertically to mirror surface , then (auto? ) adjust so their is no shadow from car's headlights that is behind.
Like lots of my other ideas , when i search for them , they already exist .maybe this one too
Found similar ideas already exist for car rear view mirrors .... ie Google finds ... ".... auto-dimming rearview mirror automatically adjusts to reduce glare from incident light by using sensors and an electrochromic gel layer...."
However my google of words "...auto adjust reflecting mirror to face incident light...." FInd there is much discussion on Faceboot and REddit for people asking for "...mirrors that reflect very bright high been lights BACK at the driver BEHIND ...: Could not find a implementation though ... Maybe it should be an Arduino project ....
One way to implement would be to mount a thin object , like a toothpick thickness and 1 or 2 cm long say on the mirror 90 degrees vertically to mirror surface , then (auto? ) adjust so their is no shadow from car's headlights that is behind.
Like lots of my other ideas , when i search for them , they already exist .maybe this one too
Found similar ideas already exist for car rear view mirrors .... ie Google finds ... ".... auto-dimming rearview mirror automatically adjusts to reduce glare from incident light by using sensors and an electrochromic gel layer...." However my google of words "...auto adjust reflecting mirror to face incident light...." FInd there is much discussion on Faceboot and REddit for people asking for "...mirrors that reflect very bright high been lights BACK at the driver BEHIND ...: Could not find a implementation though ... Maybe it should be an Arduino project ....