1978 photo, coach number 2056 on its side, still in service today -- I saw it recently.
This was displayed at the Ex on August 29th, 1978, and TransitToronto's page on this coach is quite interesting reading on the history of these coaches.
These coaches and cabs are still being made today, so it's possible some of the newer ones rolling off the assembly line could possibly last to the second half of this century. Either on one of the other North American commuter lines, or even locally on an unelectrified line (Richmond Hill, Niagara, etc) or pulled by electric locomotives.
One of the first non-prototype GO coach, #2001, is still in use today, running as part of another city's commuter train service, having been sold off during GO's cutbacks in the 90s.
"Attention Taxpayers! Please keep all loose articles of clothing, hair, senior citizens, children and household pets away from your mailbox slots to facilitate the machine's collection of your hard earned money! We all remember what happened to Jimmy and Mr. Kibbles last week!"
The doors get changed out separately. I gather they mask the doorways before they spraypaint, don't want paint drifting through the cracks. Every car painted there since the first one has looked like that coming out of the paint bay.
Every car I have seen there not only has the doors not paint, but notices on them not the hump the car. This car is no exception to the others than the bottom still has to be painted. Still have to add the car number on the sides and the roof is done.
Credit the photo when its not yours when using it in your posting.
It's actually for snow and ice removal from switches that don't have heaters on them they can drive it to a location and use it to melt ice and snow. I think they alos have a hi rail version of it too.