However, real-world transport has a real cost: time (in addition to money for fuel/maintenance/insurance/etc.). If teleporting was cheap but took 3 hours for every trip, I'm not going to be having any kind of lunch in Tokyo unless I'm living there.
The weird thing is how much time Americans are willing to waste on a commute. So many of them think nothing of spending 1-2 hours in traffic, each way, every workday, just so they can have some big McMansion in the exurbs with a giant lawn they have to spend hours maintaining every weekend.
>Maybe more roads don't solve congestion but they do produce more "goods," more Kms travelled. Presumably this has value.
When people don't do anything with all those kms traveled than move farther out of the metro area and extend their commute, no, I don't really see the value to society there. Rather, I see that it has a real cost to society for people to waste their time and money on these things, rather than things that provide positive economic value to the society at large. Don't forget that more miles driven means more accidents, more traffic deaths and maimings, etc., all of which cost society. Plus all the pollution produced.