Actually the power to weight ratio of all of Tesla's motors far exceeds that of permanent magnet motors. I am sure that the truck would use similar motors, they are both more cost effective and much higher torque (good for trucks).
Is power to weight important for a big truck? Seems like it would be less important there.
Note that Tesla is switching to a permanent magnet motor for the Model 3, which is an interesting development. I'm not sure why, but I hear the magnets have become a lot cheaper than they once were.
Is there any more info on this? My impression was that neodymium permanent magnets synchronous motors beat everything else on power-to-weight ratio, especially regular induction motors (well, I guess Tesla's motor isn't "regular", but I still wonder how they achieved that).
