Correction, grapheal, should be read as graphene?
Apologies, Rhrosty.

Hasbeen is right.
The architecture of our cities is all wrong for a non car transport
system. If I was starting from scratch I would build a city in the
shape of a wagon wheel with spokes being the main transport routes,
and with circular routes giving cross spoke access.
In between the spokes would be market gardens to supply the towns on
the spokes.

Now how do we get to there from where we are now ?
Only by planned obsolescence over a long time.
Frankly I don't believe we have that time.

This very subject has been covered in James Kunstlers books and his
belief that the suburbs are obsolete in an age of oil shortage and or expensive fuel.
His belief is that smaller towns is the way of the future.

Rhosty's suggestion may well give us more time to adept but for how
long would cheap CNG last when oil stops being a common fuel because
of its escalating cost.
Note, oil prices are now about seven times what they were at the end
of the 20th century but we are not producing seven times as much oil.
We are producing the same amount plus a little bit.
The market is no longer doing the job its promoters insist it does.

Oil as a fuel will be pricing itself out of the market for the commuter.
It has started already with peak cars now being noticed.
So how do we transport all those commuters that will not be able to
afford $200 to fill their car for the week ?

Put electric fast rail on the motorways ? Five lanes in peak hours
one way, one lane in reverse. ? It would help, but not in time.