Nash 600 History

Introduced for 1941, the Nash 600 was the first mass-produced car in the United States built with unitized (unibody) construction, making it lighter and stiffer than body-on-frame rivals. The lighter structure helped deliver class-leading fuel economy of roughly 25–30 mpg.

The '600' name was a marketing claim: paired with a large 20-gallon tank, the car could cover about 600 miles on a single fill-up. Production paused for World War II and resumed afterward; for the 1950 model year the base 600 was renamed the Statesman, while its unibody approach became standard Nash practice.