The main character's reaction shot when he leaves the gas station for the first time (devilish smile from the car, closeup) is re-used later on in the film, when he leaves the gas station for the second time.
Temple is examining charts in his office when Arden comes in to invite him back to the farm where the meteors fell. When the wall is shown again, a large new chart of the moon has appeared.
The first time Dr. Temple visits the petrol station, as the blonde attendant stands alongside his jalopy flirting with him, her gloved right hand alternates between resting on the bonnet outside the glass windscreen (with Temple's left hand holding the steering wheel) and grasping the steering wheel through the-now glassless!-windscreen (with Temple's hand off the wheel).