Priority list when driving:
1. Watch out for pedestrians
2. Watch out for cyclists
3. Watch out for motorbikes
4. Watch out for anything else I might hit or might hit me.
999. Take notice of sat nav
The only exception is that 1 and 2 are not relevant on motorways.
How inept incompetent and downright stupid are road users when a manufacturer even thinks this sort of thing might be useful?
Couldn't have put it better myself. While sat nav does have it's uses (I sometimes use them in hire vans to find places in vast urban sprawls like London), it's yet another piece of push-a-button-something-happens-so-I-don't-need-to-make-any-effort tech which makes life easier, yes, but ultimately makes people lazy. How many people simply
cannot do without it now, like mobiles?. I'm a geologist, I prefer to read maps, geological and OS, as it makes me better at reading them and understanding how to get from A-Z without resorting to tech all the time. It's not hard. I also have a trusty well-thumbed and dog-eared old A-Z of London

. So 95% of the time, I do without sat nav.
On a recent trip to the smoke, the sat nav said turn right (in a nice Irish accent) so I did only to be confronted by steel pillars restricting the width of the road. Luckily, I turned the wing mirrors in and squeezed through with a gnats whisker to spare. Blasted Sat Nav!!.
What worries me is that I have heard that the new sat navs can now tune in to live traffic cams to show you the jams. Isn't that watching TV in the car, which is illegal?. One of our staff once had someone crash into them due to the other driver faffing around with the sat nav.