Also, I asked in HHOTDI's thread if motocycles are required to have mirrors. According to
http://drivinglaws.aaa.com/laws/motorcycle-equipment/:
State that requires both left and right mirrors: Alaska, Maryland, Nevada, Oklahoma, and Washington*.
States that require one mirror: Arizona, Arkansas, California, Kentucky, Maine, Minnesota, Missouri, New Hampshire, North Dakota, Ohio, Rhode Island, South Carolina, Tennessee, Utah, and West Virginia.
States that do not require mirrors: Alabama, Colorado, Connecticut, Delaware, DC, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Louisiana, Massachusetts, Michigan, Mississippi, Montana, Nebraska, New Jersey, New Mexico, New York, North Carolina, Oregon, Pennsylvania, South Dakota, Texas, Vermont, Virginia, Wisconsin, Wyoming, and Puerto Rico.
*25 years old and newer
In Canada, Quebec requires one on each side of the vehicle, but the other provinces do not.
So, many of us could remove at least one mirror, replace it with an interior one or camera, etc.