I've seen these on many thirdgens and not just mine. (NOT tinted glass) When looking through a thirdgen rear hatch glass (from the outside looking straight through the hatch at the windshield) it appears to be blotchy in spots, like it's hazed over, but looking from the inside of the hatch out it's fine. What the hell is that? My IROC only has about 9,000 miles on it, so It's not from sun exposure or anything like that, and the glass IS clean. Any way is there a way to get rid of it besides tinting the glass?