I have a new three week old, 2011 Escalade, Platinum. Finally got up to 65mph highways speeds and could hear a constant whistle from front of vehicle with windows rolled up and air conditioner turned on. As I increased speed to the 75mph posted highway speeds the noise got louder. Noise is not mechanical. Took to dealer who put padding behind the front right headlight. Did not help. May have gotten worse. At 62+ mph I get a whistle wind noise that gets louder as speed increases. If roll right window several inches or all the way down at 65+ mph the noise gets extremely pronounced. Is not heard on drivers front window when down. Cannot drive any distances with window down on right side at 62+ mph speeds due to high whistle wind noise. Even with all windows up the noise at ascribed speeds can be easily heard. Cannot travel more than 30 minutes at these speeds, as noise is very annoying. Do all escalades have this problem? Hard to believe GM would sell $84,000 vehicles with these problems designed into vehicle.