NASCAR driver Kyle Busch's cause of death has been revealed.
The legendary superstar from the world of racing passed away on Thursday at the age of 41 from severe pneumonia that progressed into sepsis.

The medical evaluation provided to the family concluded that severe pneumonia led to a very dangerous condition of sepsis, resulting in rapid and overwhelming associated complications.
The family asked for continued understanding and privacy during this very difficult time, the statement ended.

Busch passed away the day after using a driver in the loop Chevy simulator at the General Motors Charlotte Tech Center in Concord, North Carolina. These simulators are supposed to imitate the whole feeling of racing.