Keystone (gasoline automobile)
Encyclopedia
The Keystone was an American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 automobile
Automobile
An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...

 manufactured from 1914 until 1915. Designed by Chas C. Snodgrass and built in Pittsburgh, it ran using a Rutenber 55 hp six engine
Engine
An engine or motor is a machine designed to convert energy into useful mechanical motion. Heat engines, including internal combustion engines and external combustion engines burn a fuel to create heat which is then used to create motion...

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