Good points, Torrilin. I do actually have an unlimitted public transportation pass on a discount through work (as I don't have a car, this is how I do all my travels), so that might take care of some of the worries. One of my tires is showing the wire-stuff on the sidewalls in a couple of places and the other is sort of beat up. The ride is only in the 5-6 mile range (maybe a bit less depending on the route I choose), so it's not that extreme, but water's always a good thing to have on hand.