When crime in LEGO City gets so out of control that the Police Force cannot contain it, special armoured vans are sent out. These prototypes* are heavily armoured, and fitted with hidden devices that surprise and outwit the criminals they are sent to capture. Few can escape these special force vans, besides the Brickster and his super jetpack, perhaps.
This model, which I have yet to think up a good name for, was built based on models I built when I was little. They were spy vehicles which always had some hidden features, stuff that hadn't really been produced in LEGO sets until the Agents theme. I put function over form, so it doesn't look particularly great, but I guess the same applies in the real world too when it comes to these types of vehicles.
*My cover story on all my models, to excuse any possible improvements
This is the main view of the model. It's moderately tall and thin for a vehicle, and has side panelling.