Fascinating thread. I just got a 'new' car that's 12 years old and am just discovering some of these features; some are great, but others not so - so I dread to think how much worse an actual new car might be.
The pointless one that jumps out to me is the engine stop/start. Most of the time, it doesn't seem to work (I'm informed that your battery has to be over 95% full or something?); but when it does, it's almost always when I'm stopping for two seconds before going again. Worst of all is when it kindly switches itself off, but then tells me I need to manually restart it again, whilst I'm in traffic - but the car is in Drive, of course, so I panic because it won't let me restart the engine until I remember that I have to put it back into Neutral first. This is all really dangerously distracting - I'm amazed it's legal.
Plus I hear that batteries that (supposedly) allow for start/stop cost about 5 times as much as normal ones. All this for something that has just been developed to hinder/endanger you. Why can't it just flash up a message when you've been stationary for 10 seconds, suggesting that you switch the engine off, if you're not going to be moving off soon?
It would be one thing if cars assumed drivers were all stupid, IF they could guarantee to be infallible; but as this thread (and common sense) shows, they are very far from this indeed.
The back seat check is linked to Australia and America, research on children being left in cars. Some models send an emergency alert to police if the car thinks a child has been left inside!
Of course, it's tragic when this happens, but I don't think an across-the-board stupid warning is the answer. Apart from anything else, when an automatic warning comes on every time you stop, people just learn to ignore it. This likely follows the Golden Rule Of Notifications, which states that the only people who ever take any notice are those who never needed it in the first place; and those who actually need it never notice it anyway.
This is clearly all being developed ready for when they can do away with the annoying meat-bag in the driving seat. It's also concerning that cars come with the capacity to 'report' you - whether to the dealer, police, who knows who else? How long until your insurer ramps up your premium when your car 'informs' them that you routinely switch off in-built 'safety' equipment?