If 60% of people want to travel at 8:30am and they don't want to share a vehicle, then there needs to be that many cars and space for them to park. You can par

If 60% of people want to travel at 8:30am and they don't want to share a vehicle, then there needs to be that many cars and space for them to park. You can park them further away from their destination, this increases traffic massively driving to the parking. As well, if the ride is comfortable then people will be willing to plan longer commutes. An induced demand which increases the number of miles driven and hence traffic. Watching TV in the car is a major appeal of self driving.