@paranoid marvin
But who is going to pay to operate and maintain such a system? And if you want to go anywhere 'off the beaten track' then how long would you be left waiting? The convenience of just jumping in your car and going somewhere now versus waiting for something that will probably turn up, and not knowing how clean or in what state the last user left it.
It will be operated commercially. In fact I suspect it will be big business and probably have big competition for your custom. It would inevitably be controlled centrally by computers. With no drivers there will be no humans who can't be bothered to turn up or get lost or whatever, so it will inevitably be operated more smoothly than any current human dominated taxi services.
But perhaps I'm just getting too cynical in my old age!
Aren't we all?
@Wayne Mack
How does the shared car infrastructure work with long trips?
We're not talking about shared cars. We're talking about commercially operated cars - effectively unmanned taxis. And long trips would be no different to today's hire cars where you pick them up in one place and drop them off somewhere else. Very common and very workable. However I'm sure you would be given an 'accept sharing' option when making your request; indeed you might be given several different options with different prices attached: immediate, prepared to wait 10/20/30 minutes, sharing.
How does someone prevent the idle car from leaving with one's belongs at the beach or at a hotel?
You wouldn't leave your belongings in the car and it wouldn't be idle. It would drop you off and go park itself at the nearest vacant charging slot and wait for the next request. you would make a fresh request when needed.
Would there be a charge to keep the car in one place?
Why would you keep the car in one place? But I guess you could reserve it in that way and would pay accordingly. Remember with no driver the cost of the vehicle per hour is negligible. But you would have to cover lost revenue through it not doing new jobs. About the only reason I can see for this might be if you are driving around picking up and loading the car with stuff from different places and need it to wait each time. I'm sure this would be an option.
How will the system work for people leaving a large event, say a sporting event or concert?
Well everyone had to get there at the start so there will be a lot of vehicles in the area. Also a controlling system (AI?) would manage them and position additional vehicle where anticipated demand is expected.
Is everyone lined up at the equivalent of a taxi stand waiting for the next available car?
Why on Earth would you need a taxi stand? you would simply request a car come and pick you up from your current location. You mobile phone/implant would have gps and send your location.
How about handling a mass evacuation in case of storms, fires, etc. Is it assumed everyone will have a smart phone (and that it is charged)?
The latter part of the question is already being answered 'yes' by current systems. I cannot access my business bank now without my mobile phone. The assumption is made that (a) I have one and (b) it is charged. This is already an issue and not as big a problem as many seemed to have expected it to be. The first part of the question is obvious. In the event of an emergency requiring mass evacuation additional vehicles - cars, yes, but buses etc. too - would be dispatched to collect people. Also in such a situation the self driven cars would create hugely better flow of traffic that human operated ones where we keep changing lane, accelerating and braking etc. which are the major causes of traffic jams in the first place. Self driven cars would manage this scenario an order of magnitude better than us and get everyone evacuated much more quickly.
How is traffic managed? How does the system prevent everyone from choosing the same route and leaving all alternates devoid of traffic?
Once again a centralised controller (or more likely many regional controllers) would manage this far better than we can. WE are already approaching this sort of scenario with a lot of serious talk about automatic speed limit controls being implemented in new cars. The car knows where it is through GPS and automatically restricts the car's speed to the local speed limit. This is likely to be with us within a decade in my opinion.
@Cthulhu.Science
Self driving and shared cars will make current traffic problems ten times worse as empty vehicles travelling to pick up passengers fill traffic lanes with vehicles carrying passengers.
I would expect exactly the opposite. The whole idea is that the cars will be spread out where they are needed (something demand would quickly establish) so reducing average collection journeys to their minimum.
Promoters try to sell "sharing rides with strangers sitting in the car with you." Almost nobody will be willing to lock themselves into an automated moving car with a complete stranger and no ability to escape.
This being exactly what we do each time we get on a bus or train! As stated above I'd imagine everyone would be given a (cheaper) share option when they book but it would not be obligatory, however I would image there would probably be a great many vehicles in the people mover to mini bus size range to cater for sharing.
Bottom line is that people will accept this sort of arrangement so long as it is cheaper than owning your own car and still manages to be convenient. Both of these aspects are undoubtedly on the horizon. There will also be a certain generational aspect to it; do not underestimate how many town and city dwelling young people now choose not to own a car. Of course I may be wrong but I do believe that most of the objections to such a system are more emotional than logical. Many remoter communities (like my own) are already operating similar schemes to provide transport on demand for vulnerable and elderly folk without their own cars, but inevitably these are massively less efficient (volunteer drivers etc.) than they they could be with all the new technology that will be coming along.
As humans we can be extremely Luddite in our approach when we see perceived threats to our existing privileges. Let's face it, this single fact has a great deal to do with the climate mess we are in now.
Apologies for the huge post!