Why memory-hole? It is a good working idea for very fast ground and underground public and cargo transport. It is not idea's fault that first implementation attempt was taken by some hyping unreliable and unbalanced billionaire.
If you still want to memory-hole something connected with Musk - try electric cars on batteries. The dumbest idea ever, a car with fragile and unreliable fuel tank that costs and weights half of car with insane refuel time and limited number of refuels and worst mileage ever that hugely depends on the outside temperature.
There are, idk exact fugure, many thousands miles of large diameter pipes for natural gas, oil and other stuff at high pressure without any unsolveable problems with leaks and containing pressure. Pipe with vacuum is even easier, since atmospheric pressure will auto-seal most small leaks and you need thinner pipe walls since pipe wall will work with compression instead of stretching when higher pressure is outside the pipe.
Vacuum is nothing exceptional. It is just 1bar pressure difference. It is nothing for modern technology.
So, there are no technical porblems at all to build a parallel pair of thousand miles pipe that will easily stand that funny 1bar pressure difference.
The limitations are the same as for railroads. But with pipes you have no friction, no occasional obstacles and no weather dependence. Vacuum pipe transport easily could be much cheaper in exploitation than railroads.
Why memory-hole? It is a good working idea for very fast ground and underground public and cargo transport. It is not idea's fault that first implementation attempt was taken by some hyping unreliable and unbalanced billionaire.
If you still want to memory-hole something connected with Musk - try electric cars on batteries. The dumbest idea ever, a car with fragile and unreliable fuel tank that costs and weights half of car with insane refuel time and limited number of refuels and worst mileage ever that hugely depends on the outside temperature.
There are, idk exact fugure, many thousands miles of large diameter pipes for natural gas, oil and other stuff at high pressure without any unsolveable problems with leaks and containing pressure. Pipe with vacuum is even easier, since atmospheric pressure will auto-seal most small leaks and you need thinner pipe walls since pipe wall will work with compression instead of stretching when higher pressure is outside the pipe.
Vacuum is nothing exceptional. It is just 1bar pressure difference. It is nothing for modern technology.
So, there are no technical porblems at all to build a parallel pair of thousand miles pipe that will easily stand that funny 1bar pressure difference.
The limitations are the same as for railroads. But with pipes you have no friction, no occasional obstacles and no weather dependence. Vacuum pipe transport easily could be much cheaper in exploitation than railroads.
Gonna need a very durable seal