Complex sentence: He returned to his factory job rather than joining the racing circuit as a permanent driver, and raced only a few more times until achieving great fame at Lyon, France, on July 4,1914 by winning the 1914 French Grand Prix.
Split into simpler sentences: He returned to his factory job rather than joining the racing circuit as a permanent driver. He raced only a few more times until he achieved great fame at Lyon, France, on July 4,1914 by winning the 1914 French Grand Prix.