[blueski]

But my understanding is that Kittyhawk etc are (at least in part) creating a new market of single-person "quick hops" within cities or metropolitan areas, displacing ground transport. Not only would this increase energy use per mile for existing trips, it could lead to a lot of new ones (e.g. making it viable to commute from far flung locations). This ramp in energy use for personal convenience seems problematic.