Factual error: Gus is walking around the Central New Mexico Community College. The building seen in the background is the Student Resource Center. This episode is set in 2003 but that building didn't exist until 2010.
Continuity mistake: The Salamancas brothers burn Arturo's body inside his car. When the brothers leave, there is a scenic tree a short distance down the road from the burning car. It balances the shot. When the camera angle changes to a wide view, there are no trees anywhere near the car.
Factual error: Gus is walking through a college campus. In the background, the students are wearing clothing styles from the 2010s such as skinny jeans, but the episode is set in 2003 when those styles didn't exist yet.
Continuity mistake: The sky changes multiple times during the opening sequence. It goes from clear and sunny to much cloudier depending on the angle.
Continuity mistake: Near the beginning when they are staging the crime scene, the car with the flat tires moves between being on the road and further off to the side during the angle changes.
Answer: It might be the Panavision cap he wore when directing his terrible commercials.