/sarcasm on
"GPS's are lame! Where is your adventure, where is your sense of the road is life, it is the journey!"
/sarcasm off
Until you have to stop and call the wife on your cell phone to find out where you are on Mapquest and get directions outta there!

And this may only be urban legend but I heard that there was a study that, like spell check affecting a generations ability to spell, GPS's apparently have anegative effect on memory. Short term or long term, I can't remember which
