Believe it or not, the snow is a giant volumetric sphere. the .psd file actually you can see the snow in the head and tail lights of the beetle. The whirling blowing snow was achieved by I believe the "Starfield" base texture, playing with the colors a little, and then choosing "random" application of the texture. Worked awesome. Would love to get all the streetlights working on the bridge. As for the lights, they're invisible, but inside a giant volumetric sphere. Couldn't figure out another way to handle it, because volumetric lights just weren't cutting it well. Didn't want the harsh edges or sudden ends to the lights showing up.