This factor is often overstated - for a few reasons. Passenger miles are likely to go up, if anything, even if because more vacant miles are being driven to co

This factor is often overstated - for a few reasons. Passenger miles are likely to go up, if anything, even if because more vacant miles are being driven to collect people, and also because making a service cheaper leads to higher consumption of that service. Passenger miles are what causes car sales - cars wear out. For cars which produce revenue then there comes a point where it's more economical to purchase a new one than to attend to medium-difficulty repairs. So I'm not convinced ride sharing or automated vehicles will lead to fewer cars sold. If anything I would say it has the potential to increase the number of cars sold.