Earlier quoted context omitted.
Ha! I don't think there was an external complaint. I suspect that was the mic/cameras IN the car alerting support because you were loud and they wanted to make sure you were okay. :)
If you’re screaming for help vs singing on top of your lungs, it’s a minor difference. Worth a check.
So there is no way that Support heard or listened to the music or singing in-car. In fact, their own material says "mics are off... so sing your heart out!"
So I feel like it was some pedestrian who was perhaps racist or just offended that a Waymo passenger would be enjoying himself so much with Pat Benatar blasting, and just called-in a complaint. It seems the most prosaic explanation. I couldn't explain why Support would proactively just call in "for no reason" without anyone actually complaining about my particular vehicle.