This was about the only other person in the car, so I was bound to pick him! We were coming to the end of the line (Alewife) and I noticed he had a boxy looking thing in his lap so I used questioning him about it as an entree to conversation. I hoped beyond hope it was what I thought it was: a Polaroid camera! (a Joy Cam I think) Turned out he ran a camera shop and was a Polaroid enthusiast and had a lot of interests. I said I wanted to give him a gift, I was out giving gifts to people. He was a little dubious but quite happy to say yes.