A customer sent this in to us. A piece of wood on the highway didn't just break his acrylic windshield, it obliterated the whole darned thing! With a National Cycle hardcoated polycarbonate windshield, that chunk of 2x4 would have just bounced off without leaving a scratch.
The audio has been edited for content (though it's probably the same kind of language you would use if your motorcycle's windshield suddenly ceased to exist in the middle of a ride).