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> a car can never navigate a single-lane one-way tunnel safely without a driver (ie, The Boring Company).

I think the criticisms of the Boring Company are more "small diameter tunnels are a bad way to build high-throughput underground infrastructure, and autonomous cars will not solve that"

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"small diameter tunnels" + "autonomous cars" kind of sounds like a subway train.

Sure, but have you ever been on the London Tube and noticed it's notoriously small and uncomfortable in parts? Have you also noticed how windy some stations get because the small trains fill most of the tube and act like an air piston?

Those tunnels are 12 feet diameter. Boring Co's tunnels are 12 feet diameter.

A modern subway system needs considerably larger tunnels.

Just add tracks, weld the cars together, remove the driving seats, replace the fancy NNs by vintage fuzzy logic and you're there!

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