Samantha Busch publicly thanked the racing community for their support following the sudden death of NASCAR champion Kyle Busch at age 41.The driver died from hemorrhagic shock caused by sepsis after developing severe bacterial pneumonia while using a racing simulator.Richard Childress Racing confirmed the driver's No. 8 car will be retired as a tribute to his legacy while his family continues to process the tragedy.The widow expressed comfort in the prayers and acts of kindness received from fans after the loss of the two-time Cup Series champion.