Originally Posted by
Bend alot
No actually we are re inventing the wheel.
I expect it will be a small country or a country like Norway that makes the first change.
Yes noise is an issue - but roads are real-estate, imagine needing one eighth of the current road area in a city like Sydney rather than needing on eighth more in 5 years.
That alone is thousands of houses/units that can be on current roads.
Your argument about reducing the real estate used by roads in a city like Sydney to an eighth of what it is now doesn't stack up, unless all terrestrial transport is removed.
Reducing the traffic to an eighth doesn't correspond to needing an eighth of the roading structure. Particularly in suburban areas, for example you need the same road for 500 cars an hour as you do for 50 cars an hour.