More than 1,200 Fiat 500s from across Europe revved into the Italian foothills on Saturday to mark the 60th birthday of the iconic little car. The Italian classic took its first spin on July 4, 1957. Eighteen years later, more than 4.2 million had rolled off the factory line. Production then took a 22-year break before the model was relaunched in 2007 with some modern tweaks, although it retained its traditional curves.