PTSD or Post Traumatic Stress Disorder. This is the latest euphemism according to him, we start at WWI with shell shock--->battle fatigue---->operational exhaustion---->PTSD Post traumatic stress disorder
Do you have any more information?
The implicit meaning of his words are that he is a different person when he is in the driving mindset. he isnt the 13 year old boy any more he is now a driver who is ambitious to win race and games