The Department of Mammal Vehicles probably serves as Zootopia's ministry of traffic, as seen in its appearance where a female pig is shown having photos taken for her driver license.
One slight detail that separates the DMV from other stores seen in the trailer and perhaps the movie as well, is the fact that its entire stab of workers are made up of sloths only. This means that progress there are slow but steady, although this often leads to frustration for many of its customers.
- The Department of Mammal Vehicles is an obvious play on the Department of Motor Vehicles.
- The slowness of the Department of Mammal Vehicles is also a nod to how often the real life Department of Motor Vehicles is slow on a daily basis.