19. Audi

The German carmaker has managed to maintain its rep as a non-conventional, "cool" luxury auto brand, all while steadily gaining ground on the "big three" of Benz, BMW, and Lexus. It celebrated its 100th year in 2009 with unprecedented sales numbers that validated Audi's exhaustive attention to innovative technology and design aesthetic. Kiss the rings.

YOU AUGHTA KNOW:
As of May 2009, Audi's market share of the U.S. auto industry was 8.1%.