I use Firefox and it is set to always ask me where to store the download. So if it is an update for xyz it is always placed in the xyz folder. Apart from the odd thing my downloads folder never has more than a couple of files in it so I don't lose anything I might want.

In New Zealand a turn appears to be more indicated by seeing the stop light come on first.

I would question your 90%. My experience is about 96%. If you had to resit your practical and failed to indicate a turn properly then your licence should be instantly revoked on the spot until you could demonstrate your ability to do it properly. State income would rise quite a bit from relicensing fees, and the road toll might drop to half.

Leaving aside issues like stopping on an incline etc most intersections are usually level. If inclined then by all means leave it in gear. Shifting from N to D does not take any time especially if you have been monitoring what the traffic around you has been doing. It is called being situationally aware. Nor does my car take long to actually go into gear. Once again it is called being situationally aware. If you have been situationally aware (and I hope like hell you have been otherwise you shouldn't be driving) then you don't get impatience people behind you honking.
I have had a stroke and your body is still functioning but you have no control over it. So if you are still in gear but you lose the ability to flick it out of gear, or do anything else, then your vehicle will either move into the car in front or propel you out into the intersection in the path of the 18 wheeler. No thanks.
As to Tesla being able to tell exactly what your body thinks it is doing forget it. And it would have difficulty in dragging itself AND the 18 wheeler to the hospital. It might manage to do that if you only collected a cyclist because he/she would also need to go.
If you have never had a stroke then you are lucky. If you have then think about things you can do to minimise possible affects on your own life and that of others.
I suspect if you looked at the odds of things happening to you that being rear ended is not high. I have never been rear ended but I have seen the odd car drifting out into intersections when they shouldn't have. If you did get rear ended and you were situationally aware then you have the option of applying your brakes in the same way you catch a cricket ball.
Oh and I apologise to those who don't (can't) get past the first 2 sentences of a posting because it looks like it might be too long for their comprehension skills.

It depends on the shape of the round-a-bout (remember we drive on the left side). If 4 roads I treat it the same as a cross intersection. Taking the first road off it is a left turn (left blinker), next off road is the same as going straight through so no blinker, last off road (assuming you are not going back the way you came) is a right turn so right blinker. If you see these blinkers you know where the car is going. Most round-a-bouts are 4 roaders here. If multiple roads off the round-a-bout then it is usually larger so if you see a car going round with a left blinker going what does it tell you that is useful ? It tells you that maybe the driver just forgot to turn his blinker off, or it can mean he turned it on early and is planning on turning off at some stage. You just don't know. Maybe he is going around twice (it happens) so no blinker yet. Personally I wait until it is obvious where the car is going. So blinkers mean nothing and do not help. If blinkers were so important then why aren't they made bigger and more obvious and a standardised shape and position ?
My grandfather never had an accident. He used to drive and treat other road users as if they were lunatics. I try and do the same.

Two things. How does a Tesla handle the driver dying when in self drive mode ? And secondly if you follow motoring articles they reckon there is little point in flicking your auto box into neutral when stopped at the lights and in fact it may even be detrimental to the box to do so. However I always do this because I hate to think what will happen when you stop at the lights and then have a medical event happen so your car then promptly wanders out into the middle of the intersection since it is still in gear. You might want to think about this if you are over 60.

I used to think that everything was cheaper in the US but not ice-cream after reading this. A 1/2 gallon at USD 8.99=NZD 14.65 and from Costco 2 (slightly less than 2l cartons) for USD14.99=NZD24.43 (or NZD12.21 per carton) are both so much more than our ice-cream. Our favorite is Deep South and 2l costs NZD8.23 or USD5.05.
Good to see at least one thing is cheaper here.

Watch out for round-a-bouts. In am effect to make them more usable here you are meant to indicate going into a round-a-bout and indicate when leaving. Yet one more distraction to a driver. The problem is that on the surface it seems a useful and courteous thing to do but in actuality it raises or causes jut as much confusion as before. By my estimation it is useful on about 10% of round-a-bouts with the other 90% it is just a nuisance. And imagine how this requirement would screw up a texter.

You can see the Chinese (or whoever) manufacturers working this out. "Let's see now 6" of drawstring worth 4c times 100,000 = yikes that's $4000. Let's do it anyway. I wonder if we can apply this elsewhere ?"

That will be the result of capitalism and greed. I bet they had some of the old packaging left and wanted to use them up first.

There is a tendency, once you have a key ring, to put keys on it. So you end up with a dozen keys on it. Under normal circumstances you tend NOT to use all these keys almost all the time. So you have a heap of weight, trouble in quickly finding the right key, a heap of keys easily grabbed by someone, lose 1 key lose the lot (all very well having a tag on them but if they are down a drain or manhole the tag is useless as you already know where they are), difficulty in lending another person a single key, but most importantly of all you have a bundle of keys that DO wear a hole in your trouser pockets. The car key around my neck only has one other key on it (house key). A stretchy loop doesn't work well.
And another thing that few realize is the keys are almost always on a circle type split ring that doesn't allow the keys to sit very tidily. You can buy triangle shaped split rings that allow the keys (2 in my case) to sit next to each other and take up little space. When we go out we take 2 sets of loops so that my wife doesn't have to wait for me if we happened to go different directions. We have been doing this for 10 years now and would never go back. And never misplaced our keys.

My key doesn't have to be plugged in and as long as it is within a couple of feet (around my neck) the engine starts just fine. And if I get out of the car and go shopping it is always around my neck where a. it is always in a known place and b. nobody can see it and it is hard to grab. You have no idea how convenient it can be.
Not so good if the key needs to be plugged in although it can still work okay as long as you remember that while it is plugged in AND you happen to be wearing trousers with decorative buttons that the loop can get caught on a button and pull the key to bits. This has just happened to my wife in her car although the first time in about 10 years.

My car keys live in either of two places. One is on a hook inside the house and the other is on a cord around my neck. Never ever anywhere else so I never spend time looking for my keys.

This is so true. Our society is so busy commenting on the road death rate and introducing new laws, mostly lowering speed limits because that is easier and is passive enforcement, than worrying about other causes of accidents. We have High Crash Area signs going up all over the place and usually at corners with Stop signs on them. I maintain that if they actually spent some time at Stop signs, ticket everybody not stopping with instant fines (95% don't stop these days) for a month at a time there would be such a stink in the media that the message would get through. After a few months of this I think we would see an improvement in safety.

How about not leaving them lying around just anywhere ?
Always put your stuff away in the same place then the problem goes away.
Although it can be a bit of a bugger when someone else shifts it. One of the things my wife and I argue about.
Start doing this with your reading glasses then expand the list of items that have their own places.
The good thing about this is when it becomes second nature so as dementia starts locations will have become ingrained so you won't lose so much stuff.