I don't really get this argument. People will still want to own their own car to use whenever and whereever they want. If one currently owns a car, I don't see that this would change just because one doesn't have to drive anymore.
Cutting out the middleman (i.e. the company that wants to profit off of the ownership of the self driving car) should always be cheaper given enough usage. It's the same currently with owning a car vs Uber, Lyft or taking cabs etc.
Cutting out the middleman (i.e. the company that wants to profit off of the ownership of the self driving car) should always be cheaper given enough usage. It's the same currently with owning a car vs Uber, Lyft or taking cabs etc.