Hyena
10 GW
Yeah I tried this a few years ago using a near identical reversing camera and a 4" screen on the bars.amberwolf said:--no screen I could find (locally, used, mind you) was bright enough to be seen in direct sunlight *and* in total darkness.
Cool in theory but as you say the sun makes for difficult viewing and also the viewing angle is quite limited on cheap ones. Even my samsung galaxy S4 which has one of the most brilliantly clear screens around is a struggle to see in bright sun light.
You could wear RC plane/copter style FPV glasses with forward and rear facing cameras but that just seems like a quicker way to die on the roads than using no mirror at all