Albanian drug lords rent a limousine?
The Albanians pretty much knew there'd be trouble collecting their money from Danny. Why didn't they take their own car and driver? If trouble arose, and it did, wouldn't they want their own driver who they trusted in a situation like that?
Plus, what are the chances that the hired driver happens to be the son of a former gangster who was best friends with a New York mafia kingpin (Shawn)? And the mafia kingpin's son is the one they are dealing with? It just seems too coincidental.