A rare HK Tram Sight: The Cleaning Tram

My last HK Tram related blog was a few weeks ago when the tram I was riding in had a fender-bender(or rather a 'bumper ripper-outter') with a Mini-Bus. This one is a bit more less dramatic, but none the less interesting to tram-fans.  A week or two ago I was coming home late at night and I saw this strange site.  A bizarre green tram:Upon closer inspection it was more clear:This is Tram #200,  a special 'Permanent Way Maintance'  tram.  You'll notice it is the open-top type now only used for those special event 'antique trams' you can rent for special events.   I'm not sure what all the equipment they have in there is, but they have a high pressure water hose for cleaning the tracks.  Anyway, a rare sight for Tram nerds.  :-P