Earlier quoted context omitted.
This, and the other comments that say turning your head is still necessary. I tried what the link suggests and had many instances where a motorcycle zipped by close to my car -- I didn't notice them until [what would have been] too late because I couldn't see the area next to my car easily that way. Now I have my mirrors adjusted so I can see motorcycles better, and I turn my head to check the remainder. All humans a…
This method requires you to also lean into the mirror to see more towards the side of the car. It is ridiculous, because the side mirrors should give you a far away view, and then you look to the side to make sure that closeby there is nothing either. You only have to turn your head. Now this method in the article would make you lean into mirror to get behind you, then you go back to normal position and look in the m…
You don't need to move your head at all to see a car at any point while it is coming up behind you and passing you: that's the whole point of adjusting your mirrors the way the article describes.
As the article notes, you should still turn your head before making a maneuver like changing lanes. But because your mirrors are giving you more coverage, the head turning doesn't need to be as extreme.