I spotted this video on You Tube.
During the 1960's and early 1970's, I had rode aboard and observed the last remaining electric trolley buses in service, working for the Chicago Transit Authority during their final years of operation on Chicago city streets.
I was just 11 years old when the last two routes that were still operating electric trolley buses, had ceased operating them in March of 1973. Man! Did I hate to see them vanish like they did.
Luckilly the Illinois Railway Museum in the town of Union Illinois, has the last two that operated in Chicago during the last day of operation in 1973. These were 1951 Marmon Harrington models.
Here is one of them performing a runby at the museum. www.irm.org