Kieran Jones
@quayran · May 24, 2019
Tunnels are great things to run trains through. Not cars.
Elon Musk
@elonmusk
Opposite is true: you can have 100’s of layers of tunnels, but only one layer on surface (to first approximation), therefore trains should be on surface, cars below
08:35 PM · May 24, 2019 · 0 views
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