[rationalist]

People should be taught how to adjust their mirrors properly so that they do not have a blindspot.

If a car is designed so that no amount of adjusting can get rid of the blindspot, then that car should be illegal (Chevy Malibu).

[OutOfHere]

I don't believe that is possible. If it were possible, it wouldn't be called a blindspot. Of course a mirror should be well adjusted, but I don't see how it substitutes for checking the blindspot. Try it in a driving test; you will fail the test.

[rationalist]

I literally have no blindspot in my vehicle, my parents' vehicles, or the vehicles I have rented except the Chevy Malibu.

When the mirrors are positioned properly, other cars transition from the side window, to the side mirror, to the rear mirror.

There is literally no spot that a vehicle or person standing in the next lane, is not visible.