The Elements of Traffic

I got a lift back today, and decided to try and get a good motion shot while in the car. For a bulk of the journey, I played around with long exposures (trying to keep very still), where I got some interesting shots.

However, when we had stopped at some traffic lights, thought I might try a quick bokeh effect, and took everything out of focus until just the lights remained. I like the green traffic mingled with the other headlights, and rear lights.