> "...roads [are] different, because we will not see orders of magnitude improvement on road capacity, ever." you don't need an orders of magnitude increase in

> "...roads [are] different, because we will not see orders of magnitude improvement on road capacity, ever." you don't need an orders of magnitude increase in capacity. doubling it is probably enough. you can do that by putting roads underground, right under existing roads. it's expensive, but we have concentrated and idle wealth that could be unleashed on it. let rich people who really want less congestion pay for it. people in LA willingly pay $20+ for one single-occupancy trip in the toll lanes.