It was so obvious that this wouldn't work that even Elon Musk didn't want to have anything to do with it besides posting his brainfart on the Internet for the whole world to smell.
He admitted on record that he only spouted that bullshit to counter a bid for high speed transit in California. He was never interested in the slightest to ever pursue that idea in good faith. It worked, the project was canned to invest in Hyperloop and now US transit will continue to be shit because one douche bag with more money than sense opened his pie hole. And apparently US politics listens exclusively to people with more money than the average country's budget.