For the Washington, DC area history and/or transit buffs among you, a 1957 GM bus is parked in front of Washington Metropolitan Transit Agency Headquarters at 4th and G Streets, NW today. (This is near the GAO building where I work.) You can actually board the bus and look around. The bus is parked there to mark the 50th anniversary of Rosa Parks's arrest. Her image is incuded on a window in the bus.
As a historian but also someone who first start riding what then were DC Transit buses in 1954, I remember this type of bus and enjoyed chatting with the driver, who is a long time bus driver in the city. If you're in the area, stop by and take a look, very interesting!
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