We had the opportunity to take advantage of GPS guidance on our trip (we’re first-timers), and, in most cases the TOMTOM unit my parents lent us was helpful. My wife had also taken the time to MapQuest every stop, print out detailed directions and organize everything into a nice binder (complete with state maps). It took her a fair amount of time to do this AND I’m so glad she did. There were a few times where, had we only relied on the TOMTOM to lead us, we would have added an extra 3 hours onto one leg of our voyage. It also baffled me how, even when we were within sight of our motel, it would tell us to turn around and take a different street or turn in an all together different direction. Overall it was nice to have a second opinion on some routes, but we began to joke about TOMTOM’s math and calculation skills (i.e. Traveling 200 miles on a highway at 75 miles per hour, according to TOMTOM, would take four and a half hours). With our faith in technology shaken a bit, we began to affectionately refer to our little GPS ‘genius’ as DUMDUM.