Where I live, response is very, very, quick. The police station is less than a minute from my home and the fire station just a mile farther. We don't have pizza delivery here.
I've always found assistance kind of scary in the city. If the traffic is bad, nobody is going to get through. I will say, however, that if you've ever seen a fire truck coming at you in New York city, then it will scare the living shit out of you. Those guys stop for NOTHING. Their truck is far bigger than yours and they will hit you and they they will keep going if you don't pull over, even if it's on to the sidewalk. They also get those neat gizmos that change the traffic lights to their favor so it doesn't matter if you're at a red light or not. It's going to go green for them.