Cool idea, i like not having to worry about the break fluid going bad because of water intrusion or over heating, but you know the motors are going to be stupid expensive and proprietary.
German company ZF, claims that brake-by-wire is the future of EV deceleration tech, touting range increases of up to 17%. The dry system uses electric motors to generate braking force, as opposed to hydraulic fluid. The company also brags about the system having shorter braking distances by up to nine metres.