Until we have a good idea how well these driverless cars work and how much they cost, how can you justify any of that?
It is a huge leap of faith. Will airlines start flying planes with no pilots at all?
We know there cost already, Tesla has them right now. And, yes, such computers and computing power will make individual air transport possible.
Lilium
I own two Teslas with the latest driver assist technology. While it is a great tool for drivers, it is far from as good as a person driving.
For instance, if lane markings are new it will hold a lane. If the lane markings are old or covered by dirt the warning light will show for the driver to take over. Also construction zones where the lane marking have been moved, the car tends to follow the old markings if they weren't removed totally.
The emergency braking tends to brake too early.
Emergency braking goes too early? Hmmm, and so many of the naysayers were worried about the car not braking.
I already gave you a link to a Tesla that didn't brake at all because it couldn't "see" the semi traveling directly in front of it!
You simply cannot make anything idiotproof, because Mother Nature will always be able to find a bigger idiot!
We already have plenty of idiots behind the wheel.
Little anecdotal bit to show why I have little faith in human drivers.
For 12 years I was the Director of Safety for a major utility contractor working all over the eastern US.
I was doing some basic safety training at a number of jobs. One of the classes was held during each job's weekly safety meeting. I asked each group of employees and subcontractors to raise their hand if they were a good driver. I probably asked this question of 2,000 workers. 2 men raised their hands in all of those safety meetings. Both of them were serious bikers. They could handle a Harley, but weren't as good driving cars or trucks.
I then asked the same groups to raise their hand if they had never been in a car accident that totaled the vehicle, seriously injured someone, or caused someone's death. Out of all those groups, with ages varying from 19 or 20 up to 65 or so, only 3 people raised their hand. All those hundreds of "good drivers", but they had all been in a serious accident.
Will the driverless cars be foolproof and a guarantee of no accidents? No. Will they be far safer than the potluck disastor we have now? You betcha.