The concept is that these parts of the game require the players to "pass the time" like one would on a road trip. Each person describes a vignette and makes a roll.
In Practice, hey are generating either fuel or fear each roll.
The trick here is that the GM can introduce a complication via the driver appearing or by introducing a traffic stop (which counts as a STOP towards the players goal) one they have enough FEAR. So even though they might have 5 stretches , if the pacing start dip - attack them.
Give them a moment to rest, flesh out their characters and relationships - and when they get comfortable - BOOM , THE DRIVER returns to kill them. Rinse and repeat.
And we are plannig on doing an live AP for it soon!