When sharing is win-win! Like Porsche and Volkswagen, Audi is known as one of the most famous high-end sports and private passenger cars. The Audi logo, created by August Hoch in 1928 when the DKW group bought back the Audi company, represents the union of both companies. In 1956, the Mercedes group, the principal shareholder, buys the company and sells it back to Volkswagen in 1964.
You would like to know more about the origins of that company? What you are looking for can be surely online.