This is a video from San Francisco supposedly taken only a few days before the 1906 earthquake and fire. It has been seen before, as it noted in the post over at BoingBoing, where I saw it, though this version is of much better quality. Also, the original video can be downloaded in high-quality since it’s in the public domain. If you want that, you can go on over to archive.org and get it.
I think it’s amazing to see how life was back in 1906. Note the almost-chaotic driving, the people hitching rides on seemingly random vehicles, the mix of horses, people, and cars. (Sorry, it’s a bit cut off, but you can see most of it.)