If anything good comes out of the current arms race between North American cities to land Amazon’s second headquarters, it might be a disruption of one of the more intractable subjects of public discourse: mass transportation.

Direct access to rail, train, subway and bus routes was chief among Amazon’s requirements in the request-for-proposals it issued to cities nationwide in search of its second headquarters. As readers may by now be sick of hearing, the colossus of e-commerce is promising bidd…