Juan Garcia wears his wedding ring on his right hand, the way it would appear in a mirror. This continues the theme of the 'dead' being visible as reflections and foreshadows his eventual fate.
There are scenes of Juan Garcia in his car with his daughter, Laura. Shots from the front of the car show Laura near to the middle of the back seat. However shots of Laura in the rear-view mirror show her positioned next to the rear door as well as showing a roof pillar that does not exist in the front shots.