The video is self-explanatory, I think.
I’m certain some will say that it is self-serving, that he made the video to try to minimize his punishment. This could be, and so what? The YouTube confession is still the best, most honest, most ethical, most courageous option that he had, once he had made the tragic and irresponsible decision to drive while intoxicated. Many, indeed most, and arguably all ethical acts have an element of self-serving in them. If they are right, they are right.
Imagine how much better society and the justice system would be if those who committed crimes fulfilled their societal duty to admit them, apologize, and accept their just punishment. Cordle, ironically, is not merely an Ethics Hero, but a role model.