Just never lay down in the middle of a road at night wearing black clothing. May i suggest off to the side of the road, maybe safely in a shallow ditch, wear a black plastic garbage bag, wait til someone stops to peak inside the bag,and you will have REALLY scared someone!
I had some guys tell me that this happened to them one night on a very desolate piece of county road. Whoever, whatever was going on that night along the side of the road ,nobody knows,it was like 2-3AM? A VERY LONELY ROAD in the middle of nowhere. Many miles from any town or highway too.