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Are talking about brake-by-wire? Where brakes are controlled by electric only, and if electrics die, no brakes?

These are dangerous. Cars are not maintained to aircraft standards and will never be.

With electrically actuated brakes the default power off state is fully engaged. Meaning if the power dies the brakes lock up. That causes it's own issues, obviously, but a sudden deceleration is better than no deceleration at most road speeds.

edit: as formerlyproven below states, the ones currently for sale also have a hydraulic backup.

Insane take. They will be vastly more reliable than hydraulics.

Brake by wire passenger car brake systems are still hydraulic... and all of them have a mechanical backup. There is not a single car on the market today using electromechanical brakes.

Unless you're talking about electric parking brakes in a thread about ABS.

Look up cybercab. Their new disassembled manufacturing method cannot support hydraulic lines.

Just remember to pack a bottle of spare magic smoke incase something leaks!

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