
SAN FRANCISCO - JULY 15, 2002: (FILE PHOTO) U.S. Postal lettercarrier K. Ng rides a Segway Human Transporter on his postal route July 15, 2002 in San Francisco, California. San Francisco became the first municipality in the U.S. to ban the personal vehicles from city sidewalks. California has passed legislation permiting sidewalk use of the two-wheeled carrier, which can reach 12.5 mph, but permits cities to opt out. (Photo by Justin Sullivan/Getty Images)
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