> He does say he’s working on developing a TBM that simultaneously digs and reinforces tunnels, one of the big engineering challenges for tunneling. Musk should

> He does say he’s working on developing a TBM that simultaneously digs and reinforces tunnels, one of the big engineering challenges for tunneling. Musk should have given his TED Talk on that instead of this surprisingly archaic idea for addressing vehicular congestion. I too have more hopes that this could "dramatically change the way we build and finance infrastructure" than all the other aspects of Musk's electric sleds for cars and the associated elevators that go with them to ferry cars around underground. However, a TED talk on TBMs is a boring, unrelatable talk. A TED talk on how we can "drive" our cars around awful traffic is something many, many Americans can get excited about. Even if I agree with the article author that the assumption that cars are the de facto way to get around is misguided and wrong. In other words, let's appeal to the affluent car-centric/politicians/lobbyists in cars so we can get better TBMs for public transportation projects down the road that those demographics don't usually support anyways.