>>1966091I'm not the person you're replying to but it's not hard to look that shit up. There are a lot of heavily populated megalopolises in the US and Canada that could easily have HSR.
Great Lakes megalopolis has 82 million people. Texas Triangle has 20 million. Northeast megalopolis has 50 million people. There are hundreds of past and present rail corridors sprawling across these regions where you could easily build HSR to connect major population centres.