Since Monday wasn't a ride day I took the flat tire off, found the hole in the tube and patched it. I looked at the hole in the tire and it didn't look too bad, so I remounted everything and inflated the tire and looked at it again. This time a little piece of glass was protruding from the little cut in the tire. I pried it out and put the wheel back on the bike, thinking all was well. I shouldn't think.
Tuesday I went for my ride. I noticed about halfway through that the back felt like the tire was soft. That couldn't be, so I didn't bother to check it, just kept going. Towards the end of the ride I seemed to be using more energy than normal, but I ended up with 35 miles with an average of 17.5. Not too bad. When I got off I felt the rear tire. It was soft. About 40 psi. Still leaking. I took the tire off, and sure enough, that little piece of glass had put a tiny puncture in the tube. I also noticed a spot on the tire sidewall where all the cords had been cut through, probably from hitting something with the tire soft, so the tire was scrap too. But... my door prize from the first Tour De Lions in '05 had been a Vittoria folding race tire - size 25-622. Didn't fit the old bike, but it sure fits the new one. I'm glad I kept it.
I had to work in High Point today, so on the way back to Liberty I stopped off at Performance bike and picked up a little patch kit and an Innovations Second Wind CO2/hand pump to put in my seat bag. Now I won't have to call CJ to come get me if I get a flat.