Sgt. Williams states the Hughes' address is 414 Salem Place. When Mrs. Hughes is rescued, the house number by the door is 4242.
The Highway Patrol would not investigate an armed robbery and a kidnapping. The robbery would be investigated by the local police or sheriffs department. The kidnapping--which is a federal offense--would be investigated by the FBI.
At 10:06, Matthews enters the motel room in his suit and hat, but is obviously wearing slippers.
As Oley is beginning to talk to Mr. Austin in his office, the shadow of the boom mic is visible in the upper left corner of the screen.