Kyle Busch’s family says the NASCAR superstar died after severe pneumonia progressed into sepsis

speaking on condition of anonymity.

Busch coughed up some blood and was experiencing shortness of breath on Wednesday while getting ready for Sunday’s Coca-Cola 600 at Charlotte Motor Speedway.

According to a 911 call obtained by CNN in response to a request for recordings related to Busch’s medical emergency, a caller – whose name is redacted in the continue reading …