Continuity mistake: When the load of lumber is dropped on Captain Greer's 1968 Ford Galaxy 500, the car turns into a beat-up 1960 Oldsmobile just before it is squashed.
Simon the Pieman/A Mad Mad Tea Party - S1-E12
Continuity mistake: In "Simon the Pieman," Commissioner Gordon was wearing a grey suit, but in one scene when he was telling Bruce about Simon's crimes, his suit is now red, just like Bruce's.