Its an old one but it never fails to put a smile on my face
http://members.cox.net/impunity/endofworld.swf

..some of you will remember some of these...

http://www.vbz.ch/vbz_opencms/opencms/vbz/deutsch/DieVBZ/TramBus/Sondertrams/

more trams?

http://www.pyongyang-metro.com/cgi-bin/framed/2804/metrotrams.html