Here are a couple stills adapted from a sequence I'm working on for a short film (soon to be released! (If I stop adding big cg sequences!)) The first image is straight rendered volumetrics, and the second one is all hand-done haze in post- just ended up making the most sense that way. Gonna be a hefty animation render.
Also, I was laying awake till 8am last week, so i finally got up and made a bunch of bumper stickers. They're being used in this scene for the billboards- feel free to use them for anything you like!
https://drive.google.com/open?id=18XcYQKJKK0xHS7VDPWmiWUPpSDJbnxyD