this in Car and Driver today (my emphasis):
The Society of Automotive Engineers (SAE) published a paper in 1995
suggesting how outside mirrors could be adjusted to eliminate blind
spots. The paper advocates adjusting the mirrors so far outward that the
viewing angle of the side mirrors just overlaps that of the cabin’s
rearview mirror. This can be disorienting for drivers used to seeing the
flanks of their own car in the side mirrors. But when correctly
positioned, the mirrors negate a car’s blind spots.
I'll try it this afternoon and let you know how it goes.