Re: Shared Vehicles waste energy and clog roads...
Allow me to explain:
A-to-B plus C-to-D is less than A-to-B plus B-to-C plus C-to-D.
B-to-C is the Taxi or Uber or Autonomous vehicle relocating to pick up the next passenger.
The counterargument is typically some hand-wavy future something or other to provide the doubling of energy and road spatial efficiency required just to get us back to naught.
Amazingly, this is a new thought for many.