Do they claim enough reliability and peak power capability to delete the mechanical brakes? I know Brembo is working on electric brakes that would eliminate the hydraulic circuits and pistons. I don't know what they plan to do to make sure the electrical side is as robust as the split-diagonal brake system we've been using for 60 years or so.

Having four wheel motors solves any issues that compromise a single unit, but I don't think they've answered how they would mitigate potential system issues that might bring them all down at once.