Comment on Saudi Arabia reveals 170-km-long mirrored skyscraper to house 9M peopleparentComments−zardo4yNo the article says it's a 20 minute ride to the other side of the city.Next you're going to say that a sky bridge 300m above the ground with a shin high guard rail is impractical.−divbzero4yAs described in OP:A transport system running the length of the megastructure would be designed to connect both ends of the city within 20 minutes.It would take a 500 km/h train to cover 170 km in 20 minutes. I think only maglevs [1] approach that speed.[1]: https://en.wikipedia.org/wiki/Maglev−ncmncm4yIt would take more than 20 minutes if it had to stop in the middle. So, I guess it stops only at the ends?−divbzero4yI suppose so? The Shanghai maglev train [2] might be the only high-speed maglev in operation [3]. The train has a cruising speed of 431 km/h, but averages 250 km/h in actual operation — covering 30 km in 8 minutes with no stops in the middle.[2]: https://en.wikipedia.org/wiki/Shanghai_maglev_train[3]: Maglevs in Beijing, Changsha, Incheon, and Aichi Prefecture all operate at ~100 km/h or less.
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No the article says it's a 20 minute ride to the other side of the city.
Next you're going to say that a sky bridge 300m above the ground with a shin high guard rail is impractical.
As described in OP:
It would take a 500 km/h train to cover 170 km in 20 minutes. I think only maglevs [1] approach that speed.
[1]: https://en.wikipedia.org/wiki/Maglev
It would take more than 20 minutes if it had to stop in the middle. So, I guess it stops only at the ends?
I suppose so? The Shanghai maglev train [2] might be the only high-speed maglev in operation [3]. The train has a cruising speed of 431 km/h, but averages 250 km/h in actual operation — covering 30 km in 8 minutes with no stops in the middle.
[2]: https://en.wikipedia.org/wiki/Shanghai_maglev_train
[3]: Maglevs in Beijing, Changsha, Incheon, and Aichi Prefecture all operate at ~100 km/h or less.