When the cars are speeding on the dirt roads (car chase scenes) you can hear the tires screeching as if they were on pavement.
Crew or equipment visible
When the drifter and the waitress are in the motel room and it is raining outside, they are eating in front of the window and you can clearly see the stream coming from a hose hitting the window.
When the bus is stolen, someone can be seen walking behind an adjacent bus.
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