A nail, or something like it

Around 12 years or so ago, on a visit to Reno, Nevada, I pulled into the parking lot of a shopping center. As I chose a parking space, off by myself with few other cars around, I said to myself, "There's going to be a nail RIGHT HERE!"

When I got out of the car and looked, a few feet from a front wheel and somewhat off to the side I found a small nail-like rivet.

I suppose I must have been especially tuned to these things, as I had relatively recently been having tire trouble, though with bits of glass and not nails.