Slightly related: In Vienna/Austria when you pay for a semester/yearly ticket for public transportation, you are eligible for free usage of a special taxi ("sammeltaxi") to come pick you up when the regular bus/tram isn't running e.g. after midnight. The phone number is listed on every bus/tram station, although very few people seem to use it. They claim the wait is up to 1 hour but I usually wait 15-30 minutes.