Beats sleeping in the seat or in a bare truck bed, I suppose!
Things are only as good or as bad as we make them IMO. 40 miles is still 40 more miles inland. When they get far enough from the storm they may not be able to find a motel. A mattress in the bed sounds practical to me. Actually kind of romantic if the mosquitos don't bother you:')
Lesson, think for yourself, NEVER let government do your thinking. I got fooled for an hour or two, I have learned my lesson. Thousands maybe hundreds of thousands will be standed on Texas highways as Rita rolls in. Horrible situation, I can not imagine how bad that is going to be.