article_snippet: One of the biggest factors was the car seat.
article_snippet: A variety of other factors were also likely at play.
article_snippet: We don't know what time the child was last fed, when the child drank.
article_snippet: We tend to over bundle
article_snippet: If the child had been an infant, she had been an infant might have been a different story.
article_snippet: CNN's Ben Brumfield and Nadia Kounang contributed to this report.