Apple today updated its iOS 8 Feature Availability page to note that CarPlay can now be used in five additional countries: Denmark, Netherlands, New Zealand, Russia, and Sweden. With the addition of these five countries, CarPlay is now available in a total of 25 countries around the world.
Apple's been expanding CarPlay support to additional countries rapidly in the month of April. On April 8, CarPlay support was added to Brazil, China, India, Thailand, and Turkey.
Due to the wide range of partners Apple has to work with and varying methods of implementing support, CarPlay has been slow to get off the ground. CarPlay continues to be primarily available through aftermarket in-dash systems from companies like Pioneer and Alpine, but several car manufacturers have pledged to release vehicles with support for CarPlay in 2015.