It all sounds so Jetsonian. A new 600 mph "Hyperloop" method of transportation connecting Los Angeles and San Francisco? That's the buzz around the internet water cooler as people guess what Elon Musk has in store for the transportation of tomorrow. I say, sign me up! But if we take any lessons from past visions of futuristic transportation (as we are wont to do here at Gizmodo) we can probably guess the Hyperloop's greatest hurdle: tunnels.
Nobody but Musk knows what his proposed Hyperloop transportation system might look like. We've gotten hints that it's supposed to be "a cross between a Concorde, a rail gun and an air hockey table." But despite some random online guesses partially validated by Musk himself, no one will know for sure what Hyperloop is until maybe August 12th. What we do know is that anything he proposes won't be easy without some drastic cost-cutting improvements in the way that we dig tunnels. Because not only are tunnels a necessity, they're also incredibly expensive.