Oh my. Maybe this is proof that mirror use is a developed skill.

I guess I shouldn't act surprised. As far as road users are concerned, there are both good and bad drivers. What differentiates them is usually not the ability to handle the car, it's the knowledge of knowing when and where to look. That situational awareness is learned. Young drivers pay higher insurance because they haven't developed the skill. Some drivers never do learn. Much of their safety is left to chance.

Now before somebody tells me a bike and a car are different, as far as sharing the road is concerned, we do the same things.