Just got my Volt a few days ago and did my first solo drive in it today. I noticed when I accelerate or step on the brakes to decelerate, there is an extremely high pitched sound, somewhere I think around 16-17kHz. It sends shivers down my spine. Is this a normal thing?? The sound is something like the sound of a rotary saw (though not nearly as loud), and perhaps a dog whistle. Has anyone else come across this problem?