My father has FTD. It's possible he has some sort of alcohol-related cognitive decline. That would leave him unable to grasp the severity of the event.Do you think he knows the gravitas of the situation? That he killed an athlete who made millions of dollars? Feels like he’s acting like he just ran over two random nobodies.
It's a big, big stretch. But those kinds of illnesses are commonly undiagnosed for some time. And chronic alcoholism could mean it doesn't take much for him to become intoxicated. An illness like FTD would make him more likely to drive inebriated and aggressively.