When Cool Cat is talking to John on the phone via loudspeaker it is clearly visible that the phone is not on.
When Dirty Dog appears at the end and walks around parts of his T-shirt appear transparent and show the background shining through, which indicates that he is not on location but in front of a green-screen.
At one moment, when the audience of the parade is shown, a "TV G"-sign is visible on the left top corner, which indicates that this is actually TV footage edited in the movie rather than the actual audience that was actually waving at Cool Cat in 2019.
This story suppose to take place in the current time, in 2019. However when Cool Cat is driving in his car and is waving to the audience in a parade a poster of Last Resort (2012) is visible behind him, which was running between 2012 and 2013. This is most likely a re-usage of the footage from Cool Cat's appearance at the Hollywood Parade in 2011/2012.