Ever wonder how they bore subway tunnels? It used to take a lot of explosives, but Germany is showing the world how to do it nice an easy: just make a massive drill. Several times the size of a man, this massive drill bit creates a nice, roomy tunnel for subway cars to roll through in the future.

It's just about the coolest thing we've seen in the drill world — although it doesn't quite top this awesome "blendrill."

Via io9