Don, I get road construction updates pretty often but the map only once a year and this was my first. I was just surprised when the software said a map update was available and I'd need a chip, so I kind of expected - I don't know, more detailed graphics, additional detail, Keanu Reeves driving a bus, something.
I might see a difference when we go out again next month, I just turned it on once here at home. Thanks for checking.