You've got the idea. They should never really replace a map, but they are a superb aid to navigation and they have got me out of as many problems as they have gotten me into
Seriously, the only time they will let you down is when you use them exclusively. Used in conjunction with a good map, you will never be lost again. Sian is useless with a map, and I can shout at the Sat Nav as much as i like and I don't get a thick ear.
I'm looking for a new SatNav with European maps. I have a TomTom one (UK only) at the moment, which I have been pleased with, but the cost of new maps make me wonder if I just buy a new unit.
Believe some SatNavs have a 'Truck mode' facility where you can set height and width limits. Anybody had experience of these or know if these models have that?