>showed that if ever a safe autonomous electric vehicle could be made, cities would change dramatically. <
I have a few cupboards full of cookware that spends most of its time gathering dust. Should I get "cookware as a service"? If I planned my meals out a couple of weeks in advance, maybe it would work, but if I wanted to be spontaneous and cook something I found myself craving, I might be stuck.
The same thing might happen with "Car as a service". You decide that you'd much rather go out for a sit down dinner but discover that due to a sports event just letting out that all of the cars in the area are spoken for until late. Maybe you need to pick up your son from football practice, but your payment card has been cancelled due to somebody trying to make a fraudulent charge against it. The bank caught it so it won't cost you any money, but you won't have a new card delivered for 10 business days. In the mean time, it's raining and your son still needs to be picked up. The argument that most cars spend their life sitting around isn't a good argument. We aren't buying a car with an expectation that it will be used continuously. We own a car so it's ours to use when we need it. I own a car but I still would prefer to take the train to visit my mother for the day on a weekend. The train tickets are cheap and I've rarely had a delay. Taking the car is slightly faster on a good day and significantly slower when there's been an accident or it's hissing down with rain.
Flying is completely off the menu. Somehow I seem to be on that non-existent list and would be "randomly selected" for extra screening when I would fly to the point where I was sick to the teeth of being groped and having my bags completely tossed so I've sworn off entirely. Busses that stop every block take far too long and always feel like they will tip over when they go around a corner.