Long before Dustin Hoffman discovered it in the film "The Graduate," a promising Neapolitan entrepreneur named Nicola Romeo took over this fledgling auto company and turned it into a racing and sports car legend. In the 1920s and early '30s, Alfa's team boss, Enzo Ferrari, and his drivers dominated European sports car racing as their lightweight but powerful car tore up the tracks. Today, classic Alfas fetch millions of dollars from collectors who want to relive racing's greatest moments.