Continuity mistake: At the very end of the movie, when Doug returns with the dog and the baby, the survivors have a big hug. Then the camera pans out and we discover someone is watching them. When the camera pans out there is absolutely no sign of the trailer that just blew up or the car.
Continuity mistake: Soon after the car crash in the desert, the mom is seen bringing out deck chairs. She brings out two (one dark blue one and one light blue one) and leans them up against the campervan. But in the next shot the light blue one which was in front of the dark blue one has vanished.