My dad's a good man but he has very unsafe habits. When he's not texting he usually holds his phone in the center of his steering wheel and watches some political podcast. 

I can't control what he does when I'm not with him but when I'm riding with him and he does either of those things I'm not afraid to remind him how unsafe that is for him and everyone around him. 

I usually get brushed off with the "I've been driving longer than i can remember" line. But I try to persist with the fact that you can't control what happens when you're not paying attention to the road. Sometimes he gets upset and I feel like I'm being a controlling asshole. 

He is a good driver when he's paying attention. But when he isn't we've had some close calls. 
So am I the asshole for constantly reminding him his habits are unsafe?