I bought some Garmin mapping software for my new handheld GPS today, got it installed, and tested it out at lunch. I walked over to Pentegon Row to do some reading (I started in on In Memeory Yet Green yesterday) and as I walked overthere, I used the GPS to track my position, and also to see the detailed road maps. They are great. Just like having GPS in the car, except I can carry it around with me.
The unit I have can hold 24 MB worth of maps, or so. I’ve built some collections of places I frequently travel. For instance, I can get all of metro DC, Baltimore, NYC and Rockland County on one set (within 24 MB). Also Seattle/Portland metro area and Los Angeles metro area (at least, the places in LA that I go). It’s really a cool little gadget.