When your satellite navigation system tells you to go straight on. There is a river in front of you. Do you a) drive into the river, or b) do you stop and look for another route?
The answer of course is a). You drive into the river.
A cab driver in Norfolk, whose company is called Streamline Taxis (now isn't that ironic?) , drove into a river after he took a wrong turn then blamed it on the navigation system. Read more about it HERE.
I mean seriously, it is ok to rely on a navigation system but shouldn't you still look where you are going? The cab driver's excuse makes him look just as stupid as the guy who drove along in his RV that he had put on cruise control, he then went into the back to make himself some coffee. When he woke up again after the RV had left the road and crashed in a tree he said he had no idea that cruise control just meant that you go along at the same speed but that it does not relief you from steering the vehicle. I mean HELLO?