Yes, I agree. I was careful about how I worded this to avoid saying anything about the motors actually being in the wheels for this reason.
Although, I guess at some point in the future if we can get the weight down low enough and the strength of the motor high enough we could replace the existing braking system with a motor for the same weight penalty we already pay.
In an ideal world all the energy from breaking would be used for regen anyway.
I'm not sure how close we are to that but it's an interesting thought experiment thinking about the trade offs we might be able to make in future.
Deceleration requirements are going to be harder than acceleration, one would think so how would you apply full brakes with the same motor?
I mean if your have a 750kw motor for each wheel, then they're probably always spinning when you floor it, so you also have enough torque to fully use your tires for stopping purposes
EDIT: Quick maths show that decelerating at 1g (basically what the best sport tires can do) in a 2000kg car at 300kph requires absorbing ~1500kw, so conveniently two of these motors.