[malexw]

> LA is currently the only city in North America building new subway lines.

That is demonstrably false. As I type this comment I can hear the sounds of excavators digging out a station for a new subway line in Toronto.

[closewith]

Panama Metro Line 3, too, which is underground for 5km.

[runarberg]

All the extensions under construction to the Seattle‘s link light rail are grade separated and subway standard (or 3/4 if you count the Tacoma extension).

[johnnyanmac]

which Toronto? The biggest known Toronto isn't in the US.

[12_throw_away]

"[...] city in North America [...]"