I just purchased a 2008 Cobalt Sport Sedan. It is a nice vehicle and handles well with a decent ride. The vehicle currently has 28,000 miles on it. The only problem I notice is that at about 55-60 MPH there is a fair amount of wind noise around the drivers side window. There does not seem to be much air getting into the vehicle, but the noise does not seem natural. (Does not happen on passenger side) Is this a problem anyone else has encountered? I have checked on rubber stripping and everything seems to be in tact. Any ideas? The car is still under warranty, but thought I would check here for any advice.