I don't have much to add except for a "back in my day" story: I still remember when the only option for GPS directions was buying a dedicated Garmin, or paying

I don't have much to add except for a "back in my day" story: I still remember when the only option for GPS directions was buying a dedicated Garmin, or paying your cell carrier for an extremely crappy and very expensive service that was hard to use because phone screens were too small. Everyone I knew used printed map quest for directions. GPS being standard on smart phones is just so flipping good compared to what we had before and am positive is still the killer app that pushes people to get smart phones.