Engadget reports two San Diego students showed off electrochromic panels which dim when voltage is applied, these panels could be used to reduce glare when driving. Head over to Engadget to see a video demonstration.
It's rush hour, and you're headed due West on your evening commute -- the sun burning holes in your eyes. You could flip down a window visor, trading your field of view for visibility. Or, with a prototype shown off at Intel's 2010 International Science and Engineering Fair, you could simply let the windshield darken on its own. Two San Diego students (both accustomed to copious amounts of sunshine) rigged a Toyota Prius to do just that by stringing up electrochromic panels, which dim when voltage is applied.