Louis Chevrolet
Also in 1916, American Motors Corporation (unrelated to the later American Motors created by the 1954 merger of Nash-Kelvinator Corporation and Hudson Motor Car Company) was formed in Newark, New Jersey, with Louis Chevrolet as vice president and chief engineer. By 1918 it was producing cars in a plant at Plainfield, New Jersey. In 1923 it merged with the Bessemer Motor Truck Company of Pennsylvania into Bessemer-American Motors Corporation, which lasted less than a year before merging with the Winther and Northway companies into Amalgamated Motors. The latter company apparently ceased soon after.
Automotive industry in the United States
The motor vehicle industry began with hundreds of manufacturers, but by the end of the 1920s it was dominated by three large companies: General Motors, Ford, and Chrysler, all based in Metro Detroit. After the Great Depression and World War II, these companies continued to prosper, and the U.S. produced nearly three quarters of all automobiles in the world by 1950 (8,005,859 of 10,577,426). 
Beginning in the 1970s, a combination of high oil prices and increased competition from foreign auto manufacturers severely affected the companies. In the ensuing years, the companies periodically bounced back, but by 2008 the industry was in turmoil due to the aforementioned crisis. As a result, General Motors and Chrysler filed for bankruptcy reorganization and were bailed out with loans and investments from the federal government. But according to Autodata Corp, June 2014 seasonally adjusted annualized sales is the biggest in history with 16.98 million vehicles and toppled previous record in July 2006.