Elon Musk: 在奥斯汀和圣安东尼奥之间做一个（非常简化的）超级高铁演示隧道会很酷吗？

原推：Would be cool to do a (much simplified) Hyperloop demo tunnel between maybe Austin & San Antonio?
https://twitter.com/elonmusk/status/1561604589962625025