I happened to notice this little gem on the VIA Rail website
On some VIA Rail routes, you can get off and on the train exactly where you want — even in places where there is no scheduled stop! The ideal solution for outdoor activities - at that little lake deep in the forest, or that wild river you've been dreaming of for so long!
It's only valid on some routes, and only with at least 48 hours notice, but it seems an interesting idea.
I've previously made of use of a similar thing on the long distance CityLink buses in the Scottish Highlands (from a typical timetable: pick up at all the stops listed above and all bus stops and intermediate points where it is safe for the coach to stop following a clear signal being given by the intending passenger), and I know a lot of regular rural buses do a similar thing too.
However, I've never come across trains doing this before. Is this a special Canadian thing, or does it happen elsewhere in the world too?