This must be one of the most beloved words for learners of German. The word Fahrt itself stands for drive, ride, trip, etc. Einfahrt means entrance, gateway to Autobahn, etc.
It has nothing to do with fart, even though most learners associate its sound with that. This can provide some giggles.
This photo was taken in Oberursel and it shows the entrance to a GetrÀnkemarkt (beverage shop).
alldrink – Einfahrt: entrance to Alldrink beverage shop