I find that using the "metallic" texture on streets makes them look "Need for Speed Underground," if you know what I mean. If you don't (or for other people reading this,) the streets in that game look like it has perpetually just rained.
Anyway, I think that a rainy street might add a little something to all those pretty lights in this scene. Or it might not. Mostly, I wanted to share something that I stumbled upon by accident by making the street the same colour as something metallic. Lol.