Oh, forgot to mention...
To get your new cuttings home without wilting, just pop them in a plastic zipper bag (freezer/storage bag), add a few drops of water, blow some air in and seal. Rather than adding drops of water, you can also wrap a damp piece of paper towel around the bottom of the cuttings before placing in the bag. I found this way much easier than fighting with cuttings in a cup of water while traveling in a car. In a pinch, even a plastic grocery bag will do but they tend to have small holes.
