They were horrible fuel hogs, there were pollution issues, sonic booms prohibited use at supersonic speeds over the continental U.S., they were expensive to build, and didn't carry very many passengers.

Hey, what's not to like for a bottom-line guy?

If a company won't put its own cash into something, there's probably a good reason.

They WERE cool, though.

The SST may find a niche, someday. I know at least two companies are working on it. Note the tech improvements mentioned in the article.

You see, for business travelers, it DOES pay to go faster. And as far as I can tell, not a taxpayer dollar to be seen.