A "be on the lookout" (BOLO) is out for the suspected Mulholland Maulers 4-door 1962. Reed & Malloy pull one over belonging to Nick Gentry who states he might have been going "a little fast". Malloy asks for the registration, Gentry tells him it's in the car and Malloy enters the car and searches the glove box for it. Malloy then asks about opening the trunk, Gentry replies the keys are in the ignition. Malloy opens the trunk, discovers the knife, and picks it up. There are several legal problems with this scene: a BOLO does not give officers "carte Blanche" to randomly pull over all 1962 four door sedans, not without probable cause such as a traffic infraction or equipment violation. Malloy entered the car and effectively began a search without consent, warrant, or probable cause. Malloy picks up the knife without protective gloves by the handle or photographing its location "as found". Even an average lawyer might argue the stop itself was unconstitutional therefore all evidence or statements obtained are inadmissible in court. Also, Gentry is detained at headquarters without charge which is unlawful since they had no probable cause for arrest.
When they are trying to start the car in the repair garage, not only is the sound effect fake, but it doesn't match their turning the key.
Between when Nick says, "I want to go back to the station" and "I'm not gonna talk to you anymore," his mouth moves for several seconds, but nothing is heard.