What began as a result of the size of the domestic market and the use of mass-production, that use's a radio station in metro Detroit as the primary provider of news involving it?
WDET-FM:  The station serves Metro Detroit and is the primary provider of news involving the American automotive industry and Michigan politics within the NPR distribution network. Automotive industry in the United States: The automotive industry in the United States began in the 1890s and, as a result of the size of the domestic market and the use of mass-production, rapidly evolved into the largest in the world.
automotive industry in the United States