I know of some areas that would disagree with you: it is possible to out build demand, most rural areas have done it. I have driving 4 lane highways on a nice weekday where I could see for miles in either direction and there wasn't even one other car!
The only problem is cost. For a city to out build unmet demand they would need to get to add several dozen layers of road, one on top of another (that is bridges over bridges for 12 layers). Nobody would seriously propose building such a thing. If we had it the mobility of the city would allow people to accomplish more things in the city than they can today.
The only problem is cost. For a city to out build unmet demand they would need to get to add several dozen layers of road, one on top of another (that is bridges over bridges for 12 layers). Nobody would seriously propose building such a thing. If we had it the mobility of the city would allow people to accomplish more things in the city than they can today.