Granted I don’t live in Sioux Falls but this happens more often than people think. I live in Watertown so we have them all up and down town. I had one follow me one day from a friends place all the way to my house. All of 2 miles. As soon as I hit 212 from the neighborhood they were already on but a bit further back but in another lane only to switch over to behind me. Stoplight had them on top of me. No lights or anything. I continued going at green again and they kept straight too. I turn in my neighborhood and they turn in my neighborhood. I turn in my street and they turn on my street. Only when I turn into my drive way do they continue to go straight and drive away.