Several friends and fans contacted me urgently this week: "TxDOT's going to bulldoze the Chronicle! You're in danger!" As part of its current "virtual public meeting" at a computer near you, the Texas Department of Transportation released schematics – big long aerial views of the corridor – for its three alternatives, one of which it has abandoned already, for rebuilding I-35 through Central Austin: what the agency calls the Capital Express Central project. And sure enough, there we are, under layers of proposed new concrete and asphalt at the address formerly known as 4000 N. I-35, where we've been since...