But now it is monorails!
"Under her vision, [Waltham Mayor Jeanette] McCarthy said she would hope to have an elevated electric monorail built that would connect Burlington to Waltham and then run down to Westwood and connect to the existing Fitchburg/South Acton commuter rail."
Monorail. Connecting to my commuter rail line.
This will never actually happen, but I wonder what will happen instead?
ETA: Not the only or first monorail initiative in the area.
Here's an example of Use Monorail As Kooky Way to Get Attention to Serious Infrastructure:
Which is finally working (not the monorail -- MBTA finally working to get service to New Bedford and Fall River)!
This is sort of my theory about monorail initiatives. If they get going, it usually a sign that there is a more traditional infrastructure development that needs to occur, but isn't happening because it is big and expensive and people would like to Not Have to Be In Charge Of That.