> an experienced driver knows that in a battle between engine and brakes, the engine will win, so it's utterly vital to get the engine out of play early on.
No. The brakes win on any car modern enough to have seatbelts - provided that you brake like you mean it. If you drag the brakes for two miles before deciding to actually get on them, of course the fluid will long since have boiled. That is what happened in this case. If you make the 'I need to stop now, this car is out of control' call and use the brake with authority you can bring the car to a complete stop.
I'm more worried about the start-stop button. Taking a three second press to turn off in some circumstances is obvious to us (PCs do the same thing) but would it be obvious in a car? We will end up with a label because of this, just you watch.