Factual error: The boardwalk is twice as wide as the real Long Beach boardwalk. The ramps on the real Long Beach boardwalk run parallel to the boardwalk. The movie's boardwalk ramps run perpendicular to the boardwalk.
Continuity mistake: When Vincent drives to the boardwalk after his partner is killed, he is driving a dark blue car. When he leaves the boardwalk to visit the widow, his car is gold.