... the Mobile extension - it also address the Triangle-T problem by connecting the Memphis and Chattanooga corridors to the Birmingham/Nashville corridor at Decauter, so there are two through corridors, SW/Atlanta and South/Nashville.

The non-STRACNET rail corridor is in the lighter blue.

Also note that the STRACNET corridor from Mobile through to NOLA is right on the coast - AFAIU, that's where the breaks were that cut the California / Texas / Florida Amtrak service. But its in the Southeast, so there's not the variety of existing rail corridors available that we have in the Great Lakes.

I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.