Kyle Busch 's family leaned on each other Sunday as thousands of NASCAR fans honored the racing legend during an emotional tribute at Charlotte Motor Speedway. Before the Coca-Cola 600 Sunday, Kyle's wife, Samantha Busch , appeared heartbroken while holding tightly onto son Brexton as daughter Lennix stood closely during the moving ceremony honoring the late NASCAR star, who died Thursday after a bout with  severe pneumonia  that progressed into sepsis. Kyle's parents, Tom and Gaye Busch ,