It is so mesmerizing, watching this video. This was a time when automobiles were replacing horses as the main method of travel, and was filmed before the traffic light is invented. People and vehicles scurry everywhere, and, miraculously, no one is hit or killed.
What is sobering is realizing that many of the people in this film may have been injured or killed mere days/weeks after it was taken. In fact, there is a "side by side" film on You Tube that shows this film on the left, and newsreel film taken not long after the earthquake, so you can see the devastation.
It is probably true that everyone in the film has since died. It was made nearly 100 years ago, after all.
We should not be surprised, however to discover that there are other "streetcar" films made from about this time.
The link above takes you to a 1906 film made in Boston, Massachusetts.
There is even (poor quality) a 1903 film taken from a streetcar in Boston.
But look at the crowded, narrow sidewalks of Boston - some things never change.
What a difference 100 years makes.
These make me think of my spouse's aunt, who is 104 - she was only born about six years after some of these films were made. She grew up in this world, although, by then, the transition from horses to internal combustion engines may have been more complete.
How different do we think the world will be for our children or grandchildren?