Being a PokemonGo player, I'm not sure I'd trust a navigation AI based on my walking patterns when I play. I routinely do large detours to go visit Gyms or Stops, or walk around in circles trying to hatch an egg.... I rarely walk in the most efficient A to B route, and end-up willingly doubling my walking time because the game rewards me for taking detours. That's excluding people who enter areas they shouldn't, go through private property... In AI, garbage in, garbage out? Its a big data set they have, but from my perspective, pretty much useless as the game was not rewarding "building the best route to your destination", it was rewarding "walk as much as possible"