When the driver side window is completely closed, you can hear the wind blowing sound. it usually starts off at 40 mile/hr. and gets worse as you drive faster. it's very annoying. took the car in 3 times, no use. dealer said that it's the way the lexus is built??? asked two is 300 owners, they said they don't have that problem. i want to resolve this matter, since i paid so much money for the car and it's so frustrating everytime i drive it. thank you. mr