answer: #Person1# may have left the briefcase at the hotel, so #Person2# has to drive back.
documents: #Person1#: Are you tired of driving?
  #Person2#: No, I'm doing fine.
  #Person1#: What did I do with my briefcase?
  #Person2#: Isn't it on the back seat?
  #Person1#: No, I don't see it. All my important papers are in it.
  #Person2#: You may have left it at the hotel. Should we turn around and go hack?
  #Person1#: Well, I guess we ought to go back, if you don't mind.
  #Person2#: I'll turn off at the next road.