I was feeling all kvetchy until I got on the Hudson River trail, when a tail wind lifted me into high spirits.  

Didn't think much of it as I rolled over somethign that went POP! -- until I was parked at the corner of Hudson and 10th waiting for a light when my rear tire blew out. Just standing there. Sounded like a gun going off.  

Luckily there was a bike shop two blocks away, friendly folk. Not only did the tube blow, but whatever it was that I rolled over at the beginning of the ride had shot a big hole in the tire itself. Replaced both for $40. Whole new ride. 

This was the first hot weather ride of the year, and I gotta say this is an activity done best in the heat. 11 miles later, I feel great!