That might sound a littlecrazy, but that's the dream of the underground automated highway in a nutshell.

Other challenges included existing subway tunnels crossing the path of the underground highway.

But an alternative may be emerging: replacing the crumbling elevated expressway with an underground highway.

It would have been impossible to dig metros and underground highways.

He is not the first designer to propose underground highways for Brooklyn.

Forty-two miles of underground highway in a path over two hundred feet wide.

Browse the article Will we drive on underground automated highways?

To learn more about the technologies associated with the underground automated highways of the future, visit the links on the next page.

There are legends of underground highways that ran between villages.

But he and other advocates of an underground highway said it would be worthwhile, even at three times the cost of reconstruction.