During the solar eclipse of 2017, I drove to a small town in eastern Nebraska. The town had a 10k race that day. There were about 3 cars, including mine, on this stretch of road. Stop-and-going inbetween the runners. While my wife drove, I watched Google Maps. It accurately put a short red line on our part of the road. Amused me though that it only took 3 cars to accomplish that.