Huge, moving, bright formation of lights seen very close to buildings around Lower Pacific Heights, in San Francisco, CAYesterday (01/24) the sky was particularly clear, so I spent some time looking at the "beautiful" sky we had in the city (San Francisco, CA). While I was driving home, a couple of blocks from my house, I was on a red light and for a few seconds I glanced up and I saw this HUGE formation of lights! I couldn't believe what I was seeing but I know it was not a reflection from some billboard and it was neither a helicopter nor an airplane! This is the description of what I saw: A bright light at the top of what I believe was the object (I couldn't see the object because it was very dark to determine a shape) and a group of lights horizontally grouped at the bottom. The lights that were at the bottom part were moving very fast from left to right and vice versa. The bottom lights had a squared/rectangular shape, but the one at the top, was round. They all moved together so they definitely were part of an object. They were also very bright! This object was moving from west to east slowly. It wasn't producing sound, but what really shocked me was the SIZE of what I saw! I'm not telling I saw something at the horizon....NO...I saw something that was the size of a roof top and was just of few feet above the ground.After that, I wanted to keep looking at it but I had to make a left on the light...and when I tried to find it again...it was gone.I drove for almost a half-hour looking around everywhere but nothing else happened...I'm TOTALLY SURE about what I'm describing! I cannot believe nobody else looked up the sky and saw this object! The event was enough to produce more than one car accident! I hope somebody else in the city could appreciate this event and hopefully they will also report it.((NUFORC Note: We spoke with the brother of the witness, and found him to be quite credible in his rendition of his sister's report. He reports that she was quite shaken emotionally by the experience. They will submit an illustration of what We would welcome reports from anyone else who might have witnessed this event on Thursday night, January 24, 2002. PD))