When you think of concussions most peoples first thoughts are of old boxers. Many can not even speak in the same manner they once could. Same thing in going on in football right now. High impact sports like Boxing, Football, and Racing are suspect to this. Nascar is smart to get this under control to the best of their ability. The NFL has had some issues from lack of action in past.
My son played football, Skate boarded and was, well out out boy. He has had 3 concussions one from football, one from skateboarding and one from goofing off on a trampoline. his 1st at 9 years old on a trampoline. It didn't even look like he would have got one landing face 1st on a trampoline. The snap back caused the brain to bounce off his skull. as the brain is only floating inside your head. Needless to say he get serious head aches at times still. He is 19 now so he is slowing down on the physical stuff, well at least the things that could now cost him money. Bank of Dad is only open for loans now, no more free money. LoL. This is my son in which grew up in an age where concussions are understood much better now. Jr has been racing his whole life and we know of 3 concussions he has had. We know of others he admitted to hiding, and who knows how many he may not even known he had as a child. I think Jr because of who he is and what happened to his dad, Nascar really don't want a repeat in history in the future. That is why all the sudden they are getting really serious about this issue. the ImPACT testing is going to be a regular thing for these drivers. From what I understand this test really test the brain. My son hated taking them. I think they are the reason he calmed down some. He doesn't want to take them anymore. LoL.