If you ever get to Belgium, see the Museum of Public Transportation in Liege. Until then you can take the virtual tour online

On the left is a mobile work station built in 1893. It was used to set up and then repair overhead power lines. After the Second World War, this car was still used to rehabilitate the network Air which had sustained heavy damage following the bombings.

http://full-vision.be/mdtec/  for the virtual tour, or see the museum's website at http://www.musee-transports.be/fr/musee/collection.html

Thanks to John for letting me know about this!

Trackless Trolleys / Trolleybuses

electric buses which collect power from overhead wires - not diesel vehicles which look like old fashioned streetcars / trams.

http://www.skyscrapercity.com/showthread.php?t=296283

110 year old trolley car found by accident, disguised as a tiny cabin near Green Bay Wisconsin, and it needs a new home pronto

230 were made and used by the Chicago Surface Lines company, the predecessor to the Chicago Transit Authority, to replace the cable cars used from 1890s to 1910s...  and retired in the 1940s through 50s due to the pressure to replace trolleys with busses.  100 of them were sold as scrap to returning soldiers after WW2 and used as homes, or diners, luncheons, or trailer park rentals. http://thetrolleydodger.com/tag/illinois-railway-museum/

http://fox11online.com/2015/06/04/weyauwega-couple-uncovers-piece-of-history-in-backyard/

The history of the trolley has made a big impression on Sharon Krapil, who is hoping to find someone interested in taking ownership of the train and restoring it to its former glory.

One was restored and is in the Illinois Railway Museum, here's what they looked like new:

Photos from the owner Sharon Krapil, and WLUK Bill Miston
http://thetrolleydodger.com/2015/06/05/lost-and-found-chicago-streetcar-1137/