I'm trying to find a short story I read once about some people trying to put together the next step in mass transit. They're sitting around throwing around ideas at the start of the story, talking about how supersonic flight is impractical because of the disturbance the noise creates. One mentions that there is a type of wing that can be put on an aircraft and it completely negates the sound of a sonic boom. (I believe the wings were described as a ring around the structure.) Alas, the wings provide no lift; and any wing that does cannot be silenced. Too bad you can't put the wings on a blimp, one says, and then they all look at each other.
They decide to build a rocket-powered, silent, supersonic blimp.
There follows the meat of the story: A long sequence of scenes wherein they try to get funding and federal approval. Ultimately, they fail, and the story ends with them trying to put together a subterranean supersonic system that basically answers to a description of a hyperloop.
I read this in a book of sci-fi stories, I have the impression that it was 60s-era, and something in my brain is screaming "Asimov" but I don't trust that very much.