Anyone familiar with politics and history in the Balkans, particularly in Macedonia, can have it all summed up here. It's a brilliant allegory for the state in which the Balkans exist now. For example, each character represents a different region, and the order of their deaths is significant (most obvious is the death of Ruza's Father (Marshall Tito) before Baba Zumbula (Yugoslavia)). The loss of Baba Zumbula sends Ruza (Serbia) and Trendafil (supposed parts of Macedonia under Serbian and Bulgarian jurisdiction) into a panic and a fruitless search.
These are just a few of the allegories you can find, and if you search hard enough, a picture of the Balkans will be painted for you. Although I expected this film to be funny, and it lost much of its humor (though not all... it was mainly dark and bittersweet) about halfway through, I found it to be thoroughly enjoyable. The characters have interesting chemistry and the casting is excellent. It's definitely a thinking film in the guise of a pop culture reel of a wild road trip.
See this if you get a chance!