This is an intelligent piece of optical trickery. It's a specially designed curved mirror that creates a wide-angle view of the scene behind you, such that a driver won't miss things in the blind spot, without distorting the image considerably – objects are not necessary closer than they appear.
/via +Jack Stanley
Driver’s Side Mirror with No Blind Spot Receives U.S. Patent
A side mirror that eliminates the dangerous “blind spot” for drivers has now received a U.S. patent. The subtly curved mirror, invented by Drexel University mathematics professor Dr. R. Andrew Hicks, …
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