The motorsports community is mourning the loss of two-time NASCAR Cup Series champion Kyle Busch who died at age 41.He passed away after a rapid battle with severe pneumonia that progressed into sepsis following an illness in a simulator.Major racing events including the Indianapolis 500 and the Coca-Cola 600 held tributes to commemorate his 234 career wins.NASCAR leaders and former rivals honored the legacy of the driver who is survived by his wife and two young children.