Google have moved their distance matrix API to legacy status from March 1: https://developers.google.com/maps/legacy This appears to have stopped the ggmap route function working for new projects, with these now required to use the Google Routes API
Google have moved their distance matrix API to legacy status from March 1: https://developers.google.com/maps/legacy
This appears to have stopped the ggmap route function working for new projects, with these now required to use the Google Routes API