Continuity mistake: At the end of the movie, Jack parks the car in front of a palm tree and walks onto the beach. The shot changes while he stands there for a few minutes. As the shot changes back to show him walking off the beach, the car is no longer in front of the tree, nor does he drive by during the credits. I hope he enjoys his walk back to Miami.
Plot hole: Roberta asks Jack to drive her car from the port to the casino to smuggle a transmitter through the checkposts. Since her links to the revolution were known to the authorities, and the chances that her car would be checked were much higher than with Jack's (which eventually also happened) it would have made much more sense if he had transported the transmitter in his own car. (00:08:00)