Elon Musk’s tunnel doesn’t scale, so it doesn’t matter

And yes, it would be great if this dalliance produces genuine improvements in tunnel technologies useful for building actual train-sized tunnels that can move the number of people who need to move. But Musk’s prairie-dog burrows are mostly hype, confusion, and elite projection. While delivering almost nothing useful, they are confusing elite opinion about whether we still need to build mass transit, which we do. Is any marginal benefit worth the resulting delay in getting the infrastructure we really need?

Source: Elon Musk’s Tunnel: It Doesn’t Scale, so it Doesn’t Matter — Human Transit