I'll have to admit that while driving from our home in the Chicago area to our new property in northern Wisconsin we've come to really enjoy using our Garmin Automotive GPS, and we do rely on it more often than not since we don't know the roads around the property very well yet.

We do quite a bit of "cold" driving from place to place to investigate the area, and we use the GPS to give us a route and to keep track of where we are, along with my navigator (wife) tracking our location on a street map.

When it recommends turning, we'll generally follow its directions if it seems reasonable (we won't drive into any lakes or private driveways). Still, there is a big difference between turning on to unfamiliar roads in northern WI without snow - and with snow. I simply wouldn't drive on to any unknown and unmaintained (unplowed) road.