Has anyone tried to use a small mirror to reflect the display on the windshield ? I think it would work if the angle was correct
I tried something similar using a tablet PC and various reflectors for my PriiDash program (links below). The windshield is useless during day time - not enough reflection. I then tried a piece of transparent grey plastic sheet with mixed results. The best was with a half-silvered mirror, but even that wasn't perfect. Eventually I went back to a direct display.
