[noahe]

For the kind of money they're asking for it, you could get a neat hand-held one, like the Garmin Street Pilot III GPS Colour. This would do the same thing, and be transferable from car to car.

You could also get a laptop, and a USB GPS transceiver. Then you could find your way, check your email, and with a DVD-Rom even watch a movie when you get there.

There are mapping programs and GPS units for some of the more powerful handheld computers too.

For the record, I agree with the ugly and square-peg, round hole sentiments.