On September 30, 1990, less than 1 year after becoming champion, Rob Moroso was killed in an automobile crash near Mooresville, North Carolina, only hours after finishing 21st in the NASCAR Winston Cup Holly Farms 400 at North Wilkesboro Speedway. Traveling at estimated , Moroso lost control of his vehicle on a curve with a posted speed limit. The resulting collision killed both Moroso and Tammy Williams, the driver of the vehicle in the opposite lane. The curve in which Moroso was killed is now called Dead Mans Curve, by the townspeople of Mooresville, NC.