Flying cars need new physics or a ZPM per car and steering AI isn't there yet in 2D, so that's why.
What are dongers?
But general usage is rarely more than 2 or 3 short words stuck together. Stuff like Vorratskasten and Notreserve or Fliegengitter. Well, ok, there's stuff like Insektenbekämpfungsmittel.
How much drones could you have for that cost?