Note that there are 8 state jurisdictions in the United States where surveillance in public of one specific individual by another is illegal if the surveilled party objects. https://www.ojp.gov/pdffiles/stlkbook.pdf

You are out and about it your car. It’s reasonable to think people can’t just open it and search it.

You are sitting on a park bench. It would be considered an invasion of privacy if someone opened your bag and took out a diary or note book and started reading it.

If you were meeting a friend in a public space and someone later confronted you about something you had said and produced a recording, it would probably make some portion of people uncomfortable.