One thing to keep in mind about night riding is that if you are properly kitted out in lights and reflective gear you are more visible than you are during the day.
Another thing is that on a quiet country road out in the middle of nowhere, you can see and hear the vehicles coming long before they get to you. So if you're concerned by the way the car is behaving, you can disappear down into the ditch, off the road, while it passes.