Revealing mistake: When Jenny Lerner is first having drinks with her mother at the beginning, her mother's cigarette is obviously fake. It is not emitting any smoke throughout the entire scene. (00:09:20)
Revealing mistake: During the scene where the two teenage stars are outrunning the tidal wave through the hills, the girl is supposedly carrying her baby sibling strapped to her chest. However, the legs that can be seen dangling out of the baby-carrier belong to a dummy.
Answer: It could have been salvaged and worked on, plus he was calling people in authority. There would have been an investigation into the crash, which leads back the young boy and the comet.