Comment by tux1968

Obviously I don't know the specifics of your city, but in general there are a lot of scenarios where it's valuable to get to a scene very quickly (no traffic, etc.) and obtain reconnaissance. Especially violent scenes, or it could even be a drunk driver who is still on the move, or a stolen car where the perpetrators are likely to flee on foot if stopped.

I'm sure you can come up with a lot more ideas using your imagination.