The airport is in Kloten, not in Zürich, and the run into the city is the shortest journey we price. It is also the one where the fare is set by the class minimum rather than by the kilometres — below a certain distance the tariff stops falling, because a chauffeur, a licensed vehicle and an hour of included waiting cost what they cost.
What varies here is not the road. It is the hour. The same journey is a quarter of an hour at eleven in the morning and closer to forty minutes at half past five, and a pickup timed off the flight rather than off the clock is the only version that survives both.
