[gamblor956]

Personally, I don't think a Metro system in LA is likely to work well, and I think Musk knows that. I live in LA, and even if there was a good metro system here, the city isn't walkable enough to get to an entrance easily, or if you did get to one, get close enough to your destination.

I also live in LA, and like several thousands of other commuters in and out of downtown, I find that the Metro works just fine for commuting. It's not designed to be a hyper-dense subway system like NY, since LA's not that kind of dense. It has good coverage of most of the most-visited parts of LA, including Santa Monica, downtown, Hollywood, and Pasadena. During Trojan Football, Rams, Lakers, Clippers, and Kings games, tens of thousands of people take the Metro to the stadium/Staples instead of driving because it's more convenient. Hell, almost a quarter of the Dodgers crowd takes public transportation to the stadium even though the last mile involves a shuttle bus. And during the Women's March in 2017, the Metro demonstrated the capacity to handle more than 500,000 people heading to the same destination at once. (The Women's March required them to utilize every train car available; normal capacity is generally much lower as many trains are either in the shop for maintenance or on other routes.)

Elon's tunnel has the capacity of the exit lane on the highway. It can't even compete with a side street. It's a solution for lazy rich billionaires who can't be bothered to actually think through what they're trying to do.

[DuskStar]

If a Boring company tunnel has 1/10th the capacity of a subway but costs 100 times less, that's a major win. Parallelism is a thing here, after all. (hell, if it has 1/100th the capacity at 1/100th the cost that's still a major win, because it lets you build incrementally and following a wider variety of routes)

[gamblor956]

The problem is that the boringco tunnel at max capacity has roughly 1/100 the capacity of a subway but only about 1/10 the cost. Scaled up to equal volumes, it would actually cost 10x of what a subway costs.

The expensive part of subway construction isn't the tunneling, and hasn't been for decades. The expensive part is constructing the subway stations; each station can itself coast as much as all of the tunneling.

BoringCo does nothing to solve this. It addresses the most cost efficient part of the problem that, even if they can introduce efficiencies, would only cut a fraction of a percent off the cost of public transportation systems.