I have mentioned my "private road" part of the commute before.
It is 2.5 miles of very rural type of road. No commercial operations except a farm or two and not many houses visible from the road. The speed limit is set at 50 and there is a stop sign every mile. Often there is no traffic at all for the 2.5 miles.
The other day on the morning commute I was going along at 50 and a black Mustang came flying up behind me. He pulled out and blew past me going 70 at least. Just as he got 1/4 mile in front of me I saw brake lights and he was HARD on the brakes. He just did avoid two deer walking across the road. I bet that got his heart pumping hard.