Having previously had reactive sunglasses, I recently went and bought some polaroid ones. Never had them before so when I put them on today, it was quite weird. Looking straight ahead was okay, as was through the front passenger window. But if I looked at the driver's front window or the rear window, there was a squared/chequered pattern.
Bit weird but is this due to the glass being polarised too? Or is it some other effect?
I imagine some of you must have noticed this effect?