Revealing mistake: When Syd's Dad rescues her in the car park, he starts shooting at the other car. After firing one shot the slide of his gun locks back (indicating it's out of bullets), but when the angle changes he carries on firing with no problems. (00:43:20)
Replacements - S1-E4
Visible crew/equipment: At the end, as they are moving out there is a high shot of two trucks driving towards the camera. The first truck reflects the camera shadow on the ground. (00:52:20)