Ford Motor began a manufacturing revolution with mass production assembly lines in the early 20th century, but today it is one of the world's largest automakers. The carmaker's staple of brands and models includes the Ford Mustang, the F-Series pickup, Focus, Lincoln, Fiesta, and Taurus. In addition, finance unit Ford Motor Credit is one of the US's leading auto finance companies and accounted for 6% of Ford's sales in 2015. Ford owns a small stake in Mazda and operates more than 65 plants worldwide. The company generated 68% of its sales from North America in 2015.