So living in LA I get to see a lot of Model S's and one thing I notice on most as I'm approaching them head on is that the windshield appears to have a slight blueish tint. Similar to the top of the panoramic roof if you're looking at it on a sunny day. Is this UV coating? Was this something that was rolled out from the beginning of production? My early build 2013 doesn't seem to have it. I ask because one, it looks nicer than the standard windshield... I know I'm splitting hairs there. More importantly, if it's a UV block I'd love to have it. We had the misfortune of driving from Phoenix to LA today in 115 degree heat, facing the sun and while the pano roof does an amazing job of blocking heat, the windshield unfortunately does not. I'm wondering if it's because I'm missing that blue tint.