The windows have no frame. They slide up into the body of the car. If the door opens, the car needs to roll the window down a bit, then open the door. Without power, none of that happens. And if you use the emergency switch, the window showers you in shattered glass. Quite an elegant system.
"And if you use the emergency switch, the window showers you in shattered glass"
I'll take "Things That Have Never Happened" for $800
Most people with no experience with the car reach for the handle rather than the button, as it's more intuitive. The window does NOT shatter when they do this. The window is up against a rubber seal. Rubber has give - it just drags along the rubber. Which you'd ideally rather not do, but it's hardly the end of the world.
(In case anyone is wondering why it's like this - the cars have frameless windows. The same applies to all cars with frameless windows - Teslas aren't the only ones. Generally higher-end cars.)
Donald Norman very early in his book "The Design of Everyday Things" discusses door design in modern buildings focusing on the lack and/or ambiguity of signifiers. These vehicles solve the problem just by removing the ability to open them.
"Rear doors either do not have an emergency release" - you mean like every coupé ever built? Since when were you protesting coupés? Rear doors not only do not have to have manual releases, but don't even have to exist.
"lack and/or ambiguity of signifiers" - the front manual release handle is not only not ambiguous, but is far more prominent than the electric release button, so most people with no experience with the car pull it instead of the button.
It's also, in all this, noting that modern cars have crash sequences. A crash is detected either (ideally) immediately before, or during its occurrence. A wide range of events are triggered, such as brakes, airbags, etc... and among the things triggered is *unlatching all the doors for easy egress* (the specific details depends on the door design - you want the door easy to open but not to pop out during the crash itself). Now, things can go wrong - the prime characteristic of a crash is that it mangles your car, and this can jam doors shut or cause other problems. This is why the Jaws of Life exists. But prepping the doors for egress is something that cars at least try to do during a crash.