I've had police specifically ask me to step out my car and leave my phone. My car turns my phone into a car phone. He noticed cause I called my husband (just in case) and wanted me to move far enough away from the car out of earshot of my car phone.
This was a traffic stop where he warmed me to never pass the police. Speed limit was 55. He pulled me over at 57.
Then, because I was in a suit, wanted to know where I worked.