Searching the WWW I found this tantalizing photo of a Fisher Electric Railway in Houston, TX. Time period of photo is about right, no signs of overhead electrical cables for these railway cars. More research is definitely needed. Here is a link to the image in the Houston Digital Archive:

http://digital.houstonlibrary.org/cdm/ref/collection/images/id/4904

The image in the Houston Area Library Archives looked a tad too familiar. The image is actually of the San Jose Fisher Road. See photo from San Jose history book. Click here [id=458162156]. Sorry for the premature excitement and confusion.