Do you drive a Saab?

"I sure do," I replied, thinking this was just another guy who wants my car.
"Did you see the I Spy in the paper?"
"No..."
Apparently, this guy that I work with put an I Spy into the local newspaper, spying me, before he started working at the store. He told me so tonight, only, he didn't tell me what it said. I kind of would like to know, but since it was several months ago, I obviously don't have a copy of that paper around. I guess he might have been waiting for a reply, because he said it was when he was just a customer, and then he got a job there, and he noticed I was still around. And then they ran the ad again, but blown up on the I Spy page, and he was like, thinking it was awkward if I saw it and knew it was a coworker.
He said it was something about a comment he made about the strange sound my register made, and I think I insulted him because I was so flustered, instead of acting cool and nonchalant.
I was like, "Yeah, I don't think I saw it, and plus, a lot of people say stuff about that sound anyway." And he said, "Oh, yeah, I guess I didn't think I was that special anyway." I just meant that if I had read the ad and thought it was directed to me, I wouldn't have known who the guy was, because the only distinguishing detail was that he was talking about the sound, and a million people do. But as I said it, it sounded more like he was just one of the many people who annoy me with their surprise at the banjo-like sound in the computer.
I don't know what the Saab had to do with it, though, or how he even knew that I had a Saab.