Visible crew/equipment: In the opening sequence when the crowd dances in front of the band inside the truck on the highway, you can see the shadow of the camera on a man's back as it makes an aerial shot.
Other mistake: During the opening traffic jam dance scene, many of the cars have dented roofs and hoods from previous takes.
Continuity mistake: At the beginning of the movie, after the crowd dancing scene, the camera quickly pans to the left to the girl in the yellow dress lying on top of the red car. After the pan, all the shadows of the people are pointing in the opposite direction, revealing that they shot the latter scene at a different time of day and the shots were combined to make it look like a single continuous shot. (00:03:45)