Further to the possibility of a HSR connection between Toronto and Buffalo (and points beyond), where would that line go? The photo that follows shows a high-speed AVE track in Spain. Note the width and extensive grading.
Assuming the same improvements need to be made for our own HSR, I’m not sure it will fit along the lakeshore corridor or below the escarpment without being either highly disruptive or substandard (and slow).
Maybe that’s unavoidable once you get past Hamilton; there’s no clear approach to Union, so why not take the route which services the most people? On the other hand, maybe we’ll get some brand new high-speed tracks out of this much-maligned Niagara-GTA Corridor.