Driving to Nashville a year or so ago, I got behind a lady in a Buick in Kentucky on the interstate. At first I thought she was drunk. She was weaving from the right shoulder to the left shoulder crossing two lanes in between. She very nearly missing turning the car for some curves in the road.
I hung back and observed. I noticed that both hands were coming off the wheel to gesture. She was talking on her cell phone. I followed her for a good 20 miles. I thought about calling the police on her, but I have doubts about my own abilities to talk and drive.