I quite by chance stumbled upon this youtube video showing a part of Oslo city history I had not known about - the "grain tram" (korntrikken), which was en electric tram used to transport grain from the big harbor elevator to several flour mills in Oslo from 1918 until 1967:

http://www.youtube.com/watch?v=grBhzXDDq8s

Smile,
Stein

That was a cool video! I especially liked the simple but effective way the driver switched the points so he could veer off on a siding. The tram looks like a trolley/boxcar. Nifty way to shift single car loads!
Ralph