He said something to me and I nodded and continued out . I got to my truck and got it started up . As I threw it in reverse I see the same old guy walking up to my window so I put it back in park and put the window down . He says to me , " I just want to say something nice to you .

Question: Why might the old man have wanted to say something nice ?
Answer: He knew the narrator and knew they 'd been depressedNone of the above choices .They were just being sarcastic not really niceThere are too many bad things in the world and being nice is a good thing