Well yes, using cars for urban transport is a bad habit that we should never have got into, and we should now be trying to get out of. But it's logistically and

Well yes, using cars for urban transport is a bad habit that we should never have got into, and we should now be trying to get out of. But it's logistically and politically impossible to get rid of all cars overnight. There are a number of things we can do to cut down on car usage. Self-driving is something we can do to cut down on the fatality rate per car. Each of these is a partial solution. Partial solutions are complementary, not exclusive.