Truth is, the only way to know is if you're in that car, in that situation on that road at that time. It's entirely likely that the driver was alert and cautious but probably had no way to stop. She may not have even seen the drunk until he was irght in front of her. There are all kinds of variables. I don't know if I'd be able to see in time to stop either. Sometimes, no matter how careful or cautious you are, accidents happen. It's the same on bikes. We'll crash and think, But I was being so careful, how'd that happen?
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You can catch more flies with honey than with vinegar. That's great...if you want to attract vermin.