The PCB motor might - Tech which might actually make it to us

Apart from saving copper and iron, the IEm stator is about 90 percent lighter than that on a regular electric motor with the same power specifications. It is also 15 percent cheaper. If these advantages were not enough, it also does not have cogging torque – which helps extend transmission life – is 15 dB more silent than an iron core motor and is at least 2 percent more efficient than a regular electric motor, which already has a 95 percent efficiency rate.