In most cases that's not really an advantage at all. We already have a system like this: public transport.
Public transport seems to be generally rather bad in the US, which might make self-driving cars seem useful but other parts of the world often have better public transport and self-driving cars seem a lot less exciting here.
Public transport seems to be generally rather bad in the US, which might make self-driving cars seem useful but other parts of the world often have better public transport and self-driving cars seem a lot less exciting here.