I don't have any real point here, other than perhaps to start a discussion of GPS and long distance cycling.
I just got a brand new Garmin vista cx (for non-bike related reason) and, while its not a cycling specific GPS, I noticed there is a handlebar mount accessory for $17. The north shore of Long Island is a twisted, hilly convoluted mess of hills that I ride often, but I still get lost occasionally. Not a big deal on Long Island as it is heavily populated. Eventually you find a road you recognize or a gas station with someone who can help you out.....anyways, my favorite rides around here are those where you just take off, without any real idea of where you are going and end up doing triple digit miles though roads that are mostly new. Anyways, just thought bringing a GPS out there might add to the fun...or maybe spoil the fun of getting lost.