This whole video is hard to watch. While a lot of people seem to watch NASCAR for the crashes, it feels way too morbid to watch cars, with drivers inside, flipping through the air like toys. There's no way that these drivers walked away from these accidents without some severe trauma.
Still, the men and women in NASCAR, and racing in general, are well acquainted with the risks involved in driving cars really fast professionally. No matter how skilled you are, if you race enough, you will crash. Facts are facts.