The bay area already had multiple electric trains for quite some time, I think from the 1800s and at scale in the 1920s. I think the train that ran on the lower

The bay area already had multiple electric trains for quite some time, I think from the 1800s and at scale in the 1920s. I think the train that ran on the lower deck of the bay bridge (before it was switched to car traffic) was also electric as were many other railroads around california. But it was removed after WWII since there was such a rapid switch to personally owned cars. bart is electric, and the muni streetcars (both have been that way for a while).