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Hyperloop wants to change the world. Not everyone's convinced

Hyperloops burst onto the scene in 2013. Elon Musk detailed a new type of train service in a low-pressure tube that would reach speeds up to 760 mph. The train would float on a cushion of air and be powered down the tracks by magnets.

source https://www.cnn.com/2020/11/20/tech/hyperloop-pneumatic-tube/index.html