If that wire isn’t coiled, it would take one hell of a lot of current to generate a significant EMF. At that point, I would say you’d be in more danger of battery explosion.
In all fairness, I don’t believe that Toyota has been very open about the EMF spectrum. They have said the 60hz band is safe, but haven’t disclosed much else, if my information is correct.
Why can’t one shield the wires with copper braid and encase the motor? How much radio frequency energy is dangerous? One should consider laptop computers and monitors if one is becoming concerned. We live in the US bathed in a 60 cps electrical and magnetic field.