The e-tron’s multimedia interface can be used to find charging stations along your route; check out this video tutorial on how to use the e-tron route planner to find charging stations.
Of the charging networks in North America, Electrify America has the largest collection of DC Fast Charging stations, which are mostly located along major highways and in large metropolitan areas.
PlugShare aggregates locations of various levels of charging stations all over the globe and can also be helpful when trying to find a nearby charging station. The map can also be filtered to only show free charging locations.