Tunneling and tolling the Allen south of Eglinton would provide a test case for a potential tunneled Gardiner. I stand by the idea of combining construction of the DRL with burial of the Gardiner Expressway, but that's another idea too incomprehensible to people to fly. You don't have to agree with my proposal, but don't dump on it without any better ideas to offer. I don't see why you couldn't still have a High Line type of park above the existing Allen that connects with parks to the south and the Beltline. What's so impressive about Boston's Big Dig is the lightness of the new expressway's footprint. You'd never know it's there, traffic flows so smoothly on and off of it. Burying it has opened a swath of the city for parks, squares, development, bike paths, any kind of programming. What we have now works neither for commuting, recreation, nor the environment.