Wasn't the tunnel for that other vaporware idea, hyperloop, and this was the combo that killed the high-speed train?
I was going to write, having a 12-figure net worth is a dangerous thing, because you can fund any dumb idea you have...
It's a massive boondoggle that is way over budget, years behind schedule, and now estimated to cost $135 billion.
Much like Bezos and his Blue Origin.
Even if Boring Co. and Blue Origin end up ultimately being commercial failures, they are at least pushing the envelope on engineering.
Average-ish primates tend toward love/hate relationships with 900 lbs. gorillas.
Bashing on Elon feels like boosting one's own social status at his expense. In a small band/clan/tribe/troop/whatever, that would actually be the case. But vastly more dangerous to do.
Running a rocket company with KPI dashboards turns out to produce about the same non-results as running your rocket company out of the K hole. Space is hard. Though if I were to bet on one, it would be Blue Origin because they haven't done as many wild ass design decisions that have the potential to scuttle the whole project.
I'm not sure how true that is these days, tbh. As I understand it, today, a lot of the cost is care and feeding of the TBM, plus planning and rerouting of obstacles etc. Going for a _bigger_ TBM adds some cost, but not all that much cost. In particular, it is notable that, whereas traditional deep-bore metro lines were pretty much always built with two tunnels in the 3-4 meter (ie 28sqm to 50sqm) range (similar to Elon's car tunnels), most _new_ deep-bore metro lines are now being built with a single tunnel in the 9-12meter range (250sqm to 450sqm). Examples are Dublin, Barcelona, Paris. Obviously this requires removal of a lot more material, but the simplicity of a single big tunnel still seems to win out.
PaulHoule•21h ago