Grand Central Terminal got a little closer to its ostensible goal of becoming one giant clump of humans when its new Shake Shack outpost opened yesterday, bringing beloved burgers, concretes and more future LINES LINES LINES to commuters.

Yesterday's grand opening didn't appear to be half as claustrophobic as, say, the arrival of the Shake Shack Cronut Concrete mashup, which had bodies upon bodies winding their way through Madison Square Park during its one day of glory last month. The eatery, which will be open from 11 a.m. to 10 p.m. daily, is offering some special location-centric goodies to tempt hungry Metro-North travelers, like the malt, Valrhona chocolate crunchies and chocolate toffee-topped GCT Crunch-stellation custard concrete.

Considering that 75,000 to 100,000 people pass through the Terminal every day, and that recent history suggests at least 64.3998 percent of all New Yorkers like to spend hours upon hours waiting for things, we can only imagine what madness will ensue when everyone tries to get their hands on a pre-train Shroomburger on Monday. Here are your last moments of peace, lower level dining concourse!

Expect full Lineist coverage post-Monday evening commuter feeding time.