
Visible crew/equipment: When Vicky and Chuck tell Sarah and Leo to take the baby with them, he's hurriedly placed in the baby carrier. At the start of the next shot, just as they all rush toward the motorcycle, at the right side of the screen one of the location shoot's huge lights (similar to a Mole-Richardson) is visible, along with (presumably) two crew members standing beside it. At least two of the crew's lights can be seen in the DVD's Special Features, "Creating the Perfect Traffic Jam." (01:40:10)
Visible crew/equipment: When the kid is on the motorcycle looking for his wife, you can see a camera and crew reflected in the black helmet. It's when we see the traffic jam and the rental van shot.






Answer: There is no logical reason. It can be argued that people are just stubborn and/or reluctant to leave their homes under any circumstance. However, this is a movie, and showing the last-minute chaos of people attempting to evacuate heightens the tension and the drama.
raywest ★