Although slightly off topic, you are missing a key point when you bring up the idle time of passenger cars. Passenger travel is not uniformly distributed throug

Although slightly off topic, you are missing a key point when you bring up the idle time of passenger cars. Passenger travel is not uniformly distributed throughout the day. There are peak times where extremely high bandwidth (everyone gets in their car in the morning to go to work and then again to go home at ~8am and ~5pm respectively) is needed. While ride shares will be easier with autonomous cars, we still cannot reduce current fleets by the amount you are hinting at with your '95%' estimate.