I think I just noticed something no one else has mentioned so far

While doing research for my fanfic, I noticed that Judy and Nick's cruiser near the end had the number "Z-240" on it, which I assume is the unit number. I also noticed both of the cruisers behind Lionheart when he was being arrested had the same number on them. I assume the animators simply reused the car in these scenes, and didn't bother to change the unit number on the vehicles. (It's hard to tell for sure, but when McHorn almost runs over Weaselton, I think his vehicle also had the same unit number on it.)

Screenshots: http://caps.pictures/201/6-zootopia/full/zootopia-disneyscreencaps.com-3337.jpg

http://caps.pictures/201/6-zootopia/full/zootopia-disneyscreencaps.com-8190.jpg (The other car a few seconds earlier in this scene also has Z-240 on the side)

http://caps.pictures/201/6-zootopia/full/zootopia-disneyscreencaps.com-11333.jpg