Changes

Use the third option, if you don't want to go with so many buses. Just take the red metro line (C) to the terminal station Letňany and then walk from there to the spot marked by Fatidik. It is 300m walking from there. Walk to along the street Tupolevova (big bend road, where the metro exits and bus stations are on) in the direction the buses go (starting northwards, then bending westwards) and at the first second crossing left into the Beranových until the end, then right and straight until you see a small walking path leading you to the service station. There are not so many cars and you may wait a little long if you are two male hitcherslonger there.