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

That's all fine but the real problem is not motors, it is batteries. They have motors now that are accurate to a thousandth of an inch. My soon to be son in law is a robotics engineer and there is some really amazing stuff going on. 

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.

Nice.

Actually, it looks like a coreless DD motor design brought to us by Dual back in the 70's? Dual invented the cogless DD motor that everyone copied. Making the coils on a PCB is nothing new either.
BillWojo

That's Technics back to the drawing board!