Kayla Davidson and her son, Maxx Sales, who was 4 when he died in a rear-end collision in Memphis, Tenn., in April 2014.
Kayla Davidson and her son, Maxx Sales, who was 4 when he died in a rear-end collision in Memphis, Tenn., in April 2014. Courtesy of Kayla Davidson McClatchy
Kayla Davidson and her son, Maxx Sales, who was 4 when he died in a rear-end collision in Memphis, Tenn., in April 2014. Courtesy of Kayla Davidson McClatchy