It will be interesting to observe what this means for growth of cities. In the last 100 years, city sizes increased while staying within Marchetti's travel time

It will be interesting to observe what this means for growth of cities. In the last 100 years, city sizes increased while staying within Marchetti's travel time budget [1] (1 hour for round trip) thanks to higher speeds available through motorized transport. Now that technology is redefining proximity once again, I wonder what factors will continue to encourage/discourage people to live in dense cities. 1 - http://www.cesaremarchetti.org/archive/scan/MARCHETTI-052.pdf http://www.cesaremarchetti.org/archive/scan/MARCHETTI-052.pd...