Once a month from April through October, Helsinki turns its downtown into an unlikely gathering point for American muscle, and this July 2012 cruising night captured on camera by Jamboolio is a highlight reel of just how far that culture has traveled. A 663-horsepower Shelby GT500 convertible shares the street with a 1968 Bullitt Fastback, a Dodge Viper GTS, and a supercharged 1957 Bel Air, among dozens of others. It is proof American muscle car culture became a global language.