Spot the Pineapple: at the restaurant, the scrolling LED lights are in pineapple shapes.
Shawn says, "Smack it up, flip it, run it down - oh no!" This is a reference to a Bell Biv DeVoe song "Do Me".
When Gus slowly realizes that he has a doppelgänger in the victim, the music is eerily similar to the music of The Usual Suspects (1995) when Agent Kuljan slowly realizes who Kaiser Soze really is.
In the chase scene, after the blueberry exits the traffic circle, you can see the shadow of the drone doing the aerial shot.
At 30:38 - Shawn says, "I'm in a metal cage of despair." This is likely an Anchorman: The Legend of Ron Burgundy (2004) reference to Ron Burgundy's statement, "I'm in a glass cage of emotion."