I checked the same application. It worked for me. It looks very nice. I think the 17M has a lot of data (photos, speech) as there are many audio tours in English and Spanish, showing the maps and images of the places. The introduction says that it triggers automatically when the GPS locates a place but I could not test it; I used the demo mode in the trip planner. The end of printed travel guides is close. The trees will be happy. Good approach.