Just before the end of the third act, Mannix flees the crashed car wearing a bluish hounds-tooth sport coat and a black tie. Then there is a close up of him as he runs and suddenly he is wearing a brownish hounds-tooth jacket and no tie. Then after the act break, he shows up at the train station to meet Gloria and Lew Wickersham, and he is again wearing the bluish jacket and the black tie.
Mannix unsets the emergency brake on a police car and it rolls down the road. However, he neglected to put the car into Neutral; it would be nearly impossible for a new police car to roll while in Park.
Inside a diner, there is a calendar on the wall behind the counter. It says December, 1957. But the year is 1967.
When Mannix forces Lorne at gunpoint to drive, real cops are seen at different intersections halting traffic to allow scene to be filmed.