Deliberate mistake: Slavo and Dragan are supposed to be Serbians but they speak Romanian.
Deliberate mistake: The scene where XXXX gives Dragan the package next to the statue in Greenwich park is incorrect: Greenwich park is surrounded by fences and shut at night between 6pm in the winter and 10pm in the summer when it is still light.
Answer: Because the logo's a car registration plate and a number fits that structure better than just letters.