I've posted many times about ride-sharing, but another under-appreciated factor that is contributing more and more to gridlock is package delivery. It's still more efficient than driving your car however far to pick up one (or a few) items, but the logistical difficulties are starting to pile up. Food for thought....
11/4: Lil more food for thought on traffic:
https://twitter.com/i/status/1191295205187686400