Got a flat on my way home last night... first one since I've started a new job in new office with new commute about 9 months ago, probably even a couple years before that. Happened in a nice shady spot. Finding the offending shard of metal inside the tire took longer than I expected, but changing the tube was fast and the CO2 inflator worked perfectly. Hands got a bit dirty. And then I re-loaded my flat-fixing pack when I got home. I think I might add a tweezer to my kit for those tiny pieces of wire and such.