[Aloha]

If the future is car as a service, then yes congestion does not automatically get worse, you call an automated car to pick you up, and another one to take you home, it might also mean that more ride sharing happens too

[Moru]

But we already have buses and bicycles. Car as a service might just as well make the congestion worse since it will go empty to pick you up.

[maccam94]

Think Uber carpooling, minus drivers, much cheaper, and short pickup times. Maybe 6-10 person shuttles instead of sedans/SUVs in denser areas. To a car service, moving an empty vehicle is inefficient and a waste of money.

[masonic]

Keeping an empty electric vehicle in motion all the time is cheaper than parking it, in urban contexts.

[jcranmer]

Because you're not pricing the externalities of having zero-occupant vehicles roaming around streets that are already at or near maximum capacity.