I see a lot of areas that show no signs of use. Granted that this is for Garmin users only, I still find it hard to believe that some areas in Pasadena and Altadena aren't showing anything. Nothing on Angeles Crest or GMR? Think this heat map needs some tweaking. Wish they would invest more in their app and make it more fluid given the cost of their product instead of just adding a new view. So much potential here... Hint: Look at Strava...