“At the end of the day I just want to know who’ll be responsible when the tube collapses and people get seriously hurt or worse. Can’t say I didn’t warn you guys.”
Problem 1: Thermal Expansion Problem 2: Vacuum Problem 3: Scale Problem 4: Energy Requirements / Cost Problem 5: Deceleration Problem 6: Acceleration
This article was contemporaneously posted with the actual announcement, but I agree that I don’t know why it was posted here 6 years later.