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The other reason that the GPS that came this weekend was interested was that it's the third old-school (mid-1990s) GPS that I own. Those are the type that have 20 routes with up to 30 waypoints per route.
Nowadays, the GPS units have full street maps, dynamic intelligent routing and voice directions so you don't have to look at the screen. We rented a car from Budget this last weekend, and we got a Garmin Streetpilot c550 with the car. I've seen GPS receivers that talked to you in taxis before, but this was the first time I got to use one myself.
It's pretty cool. It never failed to get us to a town or an address. In one case it was wrong about the nearest restaurant of a certain name. It did direct us correctly through a complicated interchange between the Minneapolis beltway and one of the crossing highways to get us to the airport.
One thing that's really annoying is that it won't let you change destinations or even change preferences while driving; you can only do it while stopped. I don't know if this is a feature of the rental units or if all the Garmin units do this.