Neil, i don't know if you should jump to that conclusion. Rear braking could certainly be an option in "typical" conditions, but when stomping the brakes, certainly you'd want the front to provide the vast majority. The only issue with rear braking is the rear wheels locking up. Lock up the fronts and you slow down to a stop. Lock up the rears and you spin and die. (or at least crash side or rear-on instead of front-on with airbag protection... liability thing). However, if you're not applying enough braking force to lock up the rears, there is no risk. Since it is clearly a computer controlled thing, it could be safely modulated.
The question is... did they do it that way? Or, the question is... with 120mi range, does it even matter? Get the cars onto driveways and start the technology shift, I say.
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