The car is shown entering the parking lot and the guard does not do anything on the driver side or give the driver anything. When the car pulls up to the payroll office, there is an Apex Plastics gate pass (#406) on the driver side windshield.
The robber makes his getaway in a gray 1956 Ford convertible license number 3517106. After stashing his failing car he is picked up hitchhiking by a man in an identical but supposedly different gray 1956 Ford convertible, also with license number 3517106.
The rear license plate number of the original getaway car as seen when Erwin stops after the robbery is 3517106. The car he is picked up by has a rear license plate number 351/1 and two smaller numbers or letters, which is seen after Erwin shows the driver his gun. When this supposedly same car arrives at the roadblock, the front license plate number is 3517106, the same as the rear plate for the getaway car. This indicates either two cars or license plates were used, but the wrong one was used for the roadblock footage.
While hitchhiking, as Erwin walks to get into the car, the shadow of the camera is visible on the ground next to his shadow.
When Erwin gets out of the car after it stops, he sees what is supposed to be a bullet hole in the rear, supposedly one of the two rounds fired by the guard, with the other round having hit Erwin. The mark was just the paint chipped away as there was no hole in the thin sheet metal. Later on, Matthews says the car had a punctured gas tank, alluding to why it had been abandoned. If the rear sheet metal had not been punctured, then the gas tank could not have been punctured and the car would not have stopped.
The left rear shoulder on the crook's suit jacket has a small stain that is supposed to be blood, but there is no bullet hole there or anywhere else on the jacket.
Matthews displays poor police procedure when he arrests Gloria after her phone call. He does not handcuff her or check her for weapons, just places her in the back seat. Another procedural error was the premature arrest. The state would have a far stronger case had he simply followed her to the location where she believed the money had been hidden, and then arrested both suspects.