I am unsure sorry, electric motors do still have efficiency curves so that could be it. But I think a retrofit to an existing driveline makes more sense. Food

I am unsure sorry, electric motors do still have efficiency curves so that could be it. But I think a retrofit to an existing driveline makes more sense. Food for thought though, trucks are much much heavier loaded than cars. 100-150+ tonne vs like 1.5-4 tonnes for a car. Cars are trivial by comparison. Perhaps the motor they have available doesn't have enough torque for it without gearing down.