> Because by the time this plan actually works, humans won't even be driving cars anymore.
They'll still be opening doors and riding bikes however.
> how many people keep 4 seconds of distance, wear their seatbelt, never speed, adjust their mirrors correctly, look both ways for trains, etc.
Most people? Well except for the speed one. But the vast majority of people wear their seatbelts, give a safe travelling distance (although people are terrible at judging it), and are careful at railroad crossings.
> They'll still be opening doors and riding bikes however.
Will they? I'd expect an autonomous car's doors to be under its control unless the passenger declares an emergency (which would be a Big Deal, call the police, etc.). Also, once autonomous cars are plentiful and transportation is dirt cheap, how many people will still be riding bikes in congested areas?
Because the main cost of an uber is the driver's wage, so I think it could be much less than half. Then if you share the car with multiple riders per trip, that could lower the cost much further (at the expense of slightly longer trips.)
I expect that cities will heavily subsidize it, to bring it down to about the level of public transport (but far more convenient). I'll admit it's just guessing at a very nebulous future, though.
They'll still be opening doors and riding bikes however.
> how many people keep 4 seconds of distance, wear their seatbelt, never speed, adjust their mirrors correctly, look both ways for trains, etc.
Most people? Well except for the speed one. But the vast majority of people wear their seatbelts, give a safe travelling distance (although people are terrible at judging it), and are careful at railroad crossings.