It is - especially given that often the camera is crawling as it shoots in time lapse mode. Usually when you see time lapse video, the camera is stationary. Very cool!
=) The video was taken in Winter, and we see more fog then - although a lot of the fog is actually low cloud. But, not as bad as that - not the London of the West Coast =) I'm guessing they deliberately chose foggier / cloudier days to enhance the effect. The accompanying music is really quite nice as well.