My husband and I bought this unit while on vacation, to upgrade from a smaller, very old Nuvi. We were very pleased, but we knew what the unit was, and was not, capable of when we bought it.
It will not update you when there is a wreck, a road out or traffic problems ahead, as this is the LM model (lifetime maps), not the LMT model (maps plus traffic awareness). We knew this when we purchased the unit, so it did not present a problem, as we did not expect it to do something it was not designed to do in the first place. And no, sadly, it does not brew coffee. : )
It will alert you to changing speed zones (keep the maps and drivers updated if you want the most recent information), remind you to stop and rest during long trips, find nearby restaurants and points of interest, and give great turn by turn directions. It also alerts you visually if you are going over the speed limit, by enveloping your current speed between red vertical bars if you are over.
Yes it has lifetime updatable maps, but they do not update automatically, you have to update the drivers, and maps, via a downloadable app. All of this information we expected, as we researched a bit before buying the device.
In short, if you are looking for something with traffic awareness that automatically updates, this is NOT the unit for you. If you are looking for a basic unit that gives great directions as long as you take the time to manually update the software and maps, this one will certainly work, very well.