WE will be driving for the first time from WI this January. I would like to drive straight thru on the way down ( I use to work nights)but I am not sure if we will make it. WE have a huge conversion van so I was thinking I could pull into a "rest stop" and nap an hour or so if I get too sleepy. Has anyone done this? What kind of rest stop was it? My real concern is if it's safe??