(Let's call this sound bite version of Newtonian theory of motion as "Lane's law."
Lane's law emerges in the context of reciprocity, the relations between host and guest during an emergency situation.
Linguistic mobility in translation ties up quite nicely with Lane's law. The movie is rife with these motifs of movimiento gone awry: airplanes taking off and crashing, cars and trucks coming to a halt or bursting into flames.
For a split second, in the scene highlighting Lane's law, the cross-cultural bromance between the hunky globetrotter and the migrant is electric.
This happens precisely when, in spite of its enunciation in Spanish, the Latino guy oddly seems unable to grasp Lane's law.
Lane's law bears its own irony when placed alongside the quickness of zombies.