I had about 10 minutes waiting time so I decided to try the x100s for light trails of traffic. Taken using a gorilla pod tripod. These were processed in PSE with Nik ColorEfex and Perfectly Clear - a quick 2 minute process. I used the 'T' mode on the shutter speed dial and mainly used f8 for aperture I ended up using the ND filter to try and darken the highlights and allow more processing time, therefore more traffic. Also pictured is a quick iPhone video of the setup on the back panel. Enjoy.