ram other pickups

that's literally about it

SUVs/pickups are occasionally required for tossing stuff in the back to move it, like garbage/belongings/etc

In my township, the police supervisor drives the truck around. I don't know why the fuck police supervision requires a truck, but "police supervisor" is what's written on the side of it. Maybe they put the cops back there when they're found passed-out drunk in their regular cruisers.

The police need vehicles capable of 4x4 in rural communities and rough dirt roads. This is to access the entire comunity but also give better success in chasing the drunk dodge ram driver into the corn field. The police also sometimes have things like trailers for crime scene investigation or boats for water based policing, they need a vehicle capable of towing those.

They also use some unmarked trucks for traffic control as they blend in better allowing them to do radar more effectively.

In addition to the other reply, they could service rural areas or uneven land. What if a chase / incident starts going through a farm field kinda thing.