| Message | If you're not familiar with the roads, it can be extremely useful for pinpointing really sneaky speed traps (other side of a hill, around a bend, etc).  A detector won't help you with those, and highways don't have as many opportunities for speed traps as towns, where I found the service to be most annoying (it almost became a "bridge, tree, or building close to the road ahead" warning). 
"When you say this, will you be surprised if your arguments seem to move about instead of staying put?  And will you accuse me of being Daedalus who makes them move, though you are yourself much more skillful than Daedalus and make them go around in a circle?  Or do you not realize that our argument has moved around and come again to the same place? [...] Or do you not remember?" - Socrates |  |