Autobahn literally translates to "highway" or "motorway" in German. While it might seem like a common word, it's uniquely German and carries a certain cultural weight, often associated with speed and freedom due to its lack of general speed limits.
In the song, the line "Wir könnten Fahrrad fahren auf der Autobahn" (We could ride bikes on the highway) creates a whimsical and rebellious image. It emphasizes the dream of having the city entirely to themselves, where they can break rules and experience ultimate freedom, making it a memorable and enticing word for learners.
"Stadt Für Uns Alleine" is a daydream about reclaiming a city for one night with someone you've drifted apart from.
The singer admits it's been too long and time has moved fast since they last really talked. A dream sparks the fantasy: what if, just for today, the whole city belonged to only the two of them? No rules, no bills, no limits: every traffic light turns green, they eat at the fanciest restaurant without paying, ride bikes down the highway, and every DJ plays only their song.
It's a lighthearted escape into freedom and closeness, imagining ordinary city life stripped of its restrictions so nothing stands between them.