abfarid

All of those things are implemented in modern Android. Well, almost.

• Whenever the app wants to use microphone an OS popup asks you if you want to give the app permission to use the feature. The options are "when using app", "only this time" (it will give the app one-time-use access to the mic) and "never". If you click the 1st or 3rd options, you wouldn't see the popup again and you'll have to change the permission from settings. If you choose the 2nd option, you can manually choose to give permission each time it's requested.
• This is impossible? The OS can either let the app use the mic or not, it can't tell what the app is doing with the mic. Unless you mean give a one-time permission this time, but not in the future, then we covered that in previous point.
• Android always shows a green indicator on screen (upper right corner) when any app is using the microphone or camera API. Well, almost always, some system apps might not trigger it. But if you want to see which app is using mic/camera you can tap the indicator.

The problem you described sounds more like a side effect of the core issue – corporate greed. Cars can be bad, and overuse is a problem, but let's not blame them for the faults of the system. Until the core issue is fixed, nothings will be truly efficient and useful, because those aspects will be sacrificed to profit.

I already crossed out the statement you're referring to and added and edit, but I was talking strictly about weight carrying efficiency. As in, how much useful work is done compared to carried weight. You still make some fair points that I didn't consider though.

If what you say is true, and they can fit all the necessary tech into 50kg, or anything under the weight of an average human, then I agree, in efficiency, that (50%+) beats even the best bus scenario (35% at full capacity) according to my calculations. By efficiency, I mean what percentage of carried weight is useful.

Yeah, I already crossed out that statement. See details here.

See this.

Spoiler alert: I decided I was wrong.

But try the cool calculator I made!

I have already rescinded that decision in this comment. But I wasn't comparing the volume, I was comparing the amount of useful work done relative to the weight. If you wish, the details are in the linked comment.

I'm not a car owner, so I might be wrong. But I don't think it's normal for people to decide owning a car based on whether or not there's room for it.
Also, I think they meant that self-driving cars that will be taking non-owners to their destination. Since there's already a car that's taking me, I don't need to buy my own.

Regarding your 1st point, yes, it is a problem that cars are underutilized. So I think that in addition to promoting public transport, for the time being, we could also promote proper usage of cars. Here in Europe, we don't have much problems with cars compared to US, but oh boy you guys overseas need to tame your F-150 owners.

Regarding the 2nd point, it's not a fact but an opinion. With which I don't really agree. I believe that true self-driving cars will eventually surpass the capabilities of meatbags, but I will look up the literature. Solely based on what you said, it seems to me that the "dead heading" problem is just a logistical issue that can be solved using science/technology (if the fleet of cars is algorithmically dispersed enough, they will always pick up a nearby passenger, as a hypothetical solution).
But yes, the corporations remain an issue and they will surely find a way to mess everything up. That is a separate problem that also needs solving, capitalism and overconsumption.

The solution would be autonomous single seat cars, similar to the podbike.

Interesting proposal. I think that a single-seat vehicle will inherently be too inefficient cause you need to have all the infrastructure, but you carry only 1 person. 2-4 passenger vehicles would probably still be most optimal.

But yes, I do believe that autonomous cars will unlock possibilities that humans can tap into. Eventually, robo-car will not be equal to a taxi, it will be more than that. But I hope that it's publicly owned and not corporate.

I dunno where you’re getting your numbers for the calculation you’re doing, that would probably be something good to include

Absolutely fair. In fact, since yesterday night I tried to do more variations of my calculations for different types and now I, at least, heavily doubt my own conclusions and, at most, disagree with my conclusions entirely. Especially taking into consideration some of the aspects that people like you mentioned. But here's my approach. When I was saying "efficiency" I specifically meant percentage of useful work done relative to weight (I know it's not a be-all, end-all metric, but that's what I chose). For example, a 2 ton car carrying one 70kg person has efficiency rating of:
(70 kg / 2,070 kg) * 100 = ~3.38%
Then I did these calculations for 1, 3 and 5 passengers, which makes 3.38%, 9.50% and 14.89% respectively. Then I took a random bus (curb weight = 12000 kg, max capacity 40 passengers), and repeated the calculations for 1 passenger, half and full occupancies. That came out to 0.58%, 10.45% and 18.92% respectively. Seeing that at half occupancy, cars are basically as efficient as busses, and knowing that on average busses are not even half-loaded (around 40%) I concluded that cars are in fact very efficient, given that you use them properly.
But of course that isn't the whole picture. Some issues with my numbers that I found:

• average car is much lighter than 2000 kg (regular sedans are about 1500 kg, and a typical European car is around 1100 kg)
• busses at that weigh actually have much more occupancy
• it's unfair to compare half occupancy, because statistically cars have 1.2 passengers on average.

Taking these things into account, I (mostly Claude) made this calculator. It even has rough numbers for certain cars and bus types. Using that calculator I can clearly see, that busses win, even when lighter cars are reasonably utilized.

talking about autonomous vehicles

This was a sci-fi hypothetical anyway, even optimistically, I don't think we will have truly self-driving cars for another 5-10 years. I agree with a lot of what you said, but we can't really apply today's approach to that future sci-fi scenario. For example, if we have a swarm of hive-mind public cars that anticipate each other's moves, then those potentially could be way more efficient than route based traffic. But I don't wanna fixate on the hypotheticals.

Regarding your last paragraph, I don't own a car, mostly walk and use trams. But I live in Europe, and here in Warsaw, we don't really have a car problem. Sure, the work commute hours are a bit loaded, but otherwise, public transport is really good and a car is barely needed. So yes, until further notice, avoid cars if possible.

Thank you for such a lengthy and detailed response!

Regarding your first point, I'm aware that that is the unfortunate truth. That IS the issue with cars when it comes to efficiency. ~~If you load the car with 3-5 passengers it easily beats busses in efficiency, according to my calculations. But that's not gonna happen.~~

Regarding your second point, the core of the issue is just capitalism, not self-driving cars or privately owned cars.
Cars don't have to drive around empty if they are some sort of shared transport that can pick up the nearest passenger.
If companies aren't gonna cause unnecessary car purchases only those who need them anyway will own them.

Basically, the problem with cars is not cars themselves as a concept, it's the overuse and misuse. But unfortunately, that isn't changing anytime soon.