electric powered street light trucks used by the Bureau of Power and Light.

The above looks like a CT Electric truck http://justacarguy.blogspot.com/2017/06/1912-electric-truck-damn-its-big.html

http://waterandpower.org/museum/Early_City_Views%20(1900%20-%201925)_Page_2.html
http://waterandpower.org/museum/Early_Bureau_of_Power_and_Light_Streetlights.html