The public fishing pier at Elliott Bay Park stands out from the darkness and encroaching fog with its solitary street lamp looking like a starburst. In the distance the fog is made visible by the lights, but to the left the darkness quickly takes over.
A DeLorean DMC-12 shrieks down the tracks as it arrives from the the future. They came to fix a bolt that is rusting a little faster than the others on the Space Needle. That bolt causes a catastrophic collapse of the Needle in the year 2078 and kills Marty Jr's grandson. By fixing it now, all trouble is averted.
Ok, in reality it is just a rather slow moving train passing by underneath the Amgen pedestrian bridge. In this time exposure it seems just a bit more dramatic.