Here is a weird thing. I was listening to a CD while driving at 60mph on the freeway. This CD features a conga player prominently. Apparently, the Automatic Noise Cancellation system heard parts of it as engine noise, and tried to cancel it out. It sounded like the classic feedback you hear from a microphone -- starts quiet and gets louder. The frequency or pitch of the sound was close to that of the engine. It was noticeable, and quite irritating. So it looks like there are some types of music I'll be unable to listen to in this car. Anyone else experience this? (The CD was "Cachaito" by the Afro-Cuban Jazz musician Orlando "Cachaito" Lopez.)