(1) Erik Brynjolfsson on X: "The folks in the Northeast corridor of the US create more GDP than any other megapolis in the world. They would create even more if they were better connected." / X#Transportation#Geography#Economics#New England·x.com·Jul 25, 2025(1) Erik Brynjolfsson on X: "The folks in the Northeast corridor of the US create more GDP than any other megapolis in the world. They would create even more if they were better connected." / X