Complex sentence: By 1910, the city was also the home of a car manufacturing company, the New Kensington Automobile Company, and the Pittsburg Motor Car Company had established a production plant for its "Pittsburg Six" model in New Kensington.
Split into simpler sentences: By 1910, the city was also the home of a car manufacturing company, the New Kensington Automobile Company. In addition, the Pittsburg Motor Car Company had established a production plant for its "Pittsburg Six" model in New Kensington.