Old as the road was, it was manifest that it had been of the mono-rail type.
Consider for a final moment, in passing, the mono-rail, the gyroscope.
Roads will improve, and railways and mono-rail tramways will extend.
People asked in mono-rail trains, "When are we going to fly?"
It must have been nearly two hundred miles an hour: the Brennan mono-rail is nothing to it.
It is likely to play an important part in aerial navigation and mono-rail systems of transportation, in the future.
Practical railroad men have given to the mono-rail car a sufficiently warm welcome.
These will be just as much a part of the equipment of the mono-rail trunk line as wharves are a part of steamship service.
An actual railroad of the mono-rail type has been built and is being developed in the suburbs of New York City.
All of these mono-rail roads will become applicable to the gyroscope when that wondrous man-toy becomes a man-tool.