Ferdinand Porsche's initial contribution to the automotive world was the invention of an electric motor for wheel hubs in 1897. In 1931 the Porsche marque was established in Germany by Ferdinand Porsche, Jr., and in 1948 the first automobile to wear the Porsche name, the 356 Roadster, was produced. Over 25,000 Roadsters were sold in the first ten years of production. The time-honored 911 was introduced in 1963, and is still in production today.