The 1906 Roadster or Runabout Model B, priced at US$600 (originally priced at US$550), was the only vehicle the company built. It had room for two passengers and was described as "artistic in appearance" in an advertisement in a national trade magazine. The company noted that "while this is our first season with this style of car, we have had years of experience in the construction of gasoline motors and can frankly say that no machine of this class has fewer parts.
Lumber Dealer, F. M. Sibley financed the Sibley Car Company, Detroit, MI, in order to help his son Eugene. Manufacturing began in 1910 and the roadster was its only model.with a 30 hp, four-cylinder motor on a a 106 inch wheelbase. The transmission was three speeds and the price of the car was $900. In 1911, the Detroit Valve and Fittings Company sued the Sibley Company for default on lease agreement of the factory building. The Sibley closed down.