acoustic insulated glass--saturn but not caddy?

Hey all,

Just thought I'd share this, not as a whine, but as an interesting finding. Took the first long distance trip in the CTS yesterday from Indy to Chitown, and back. The car handled great and loved the pick up . . . but one thing I noticed, other than seats that could use a little more support, is that the amount of noise through the windshield and side windows is noticeably higher than my Aura. I then looked at the label and it seems the caddy doesn't have the acoustic glass that my Aura XR has. I was floored! Just a comment, but for a car twice the cost, I thought for sure it would have the equivalent sound deadening materials. Any thoughts?